diff --git a/backend/data/timelines.js b/backend/data/timelines.js
index 801091b..6fcc77a 100644
--- a/backend/data/timelines.js
+++ b/backend/data/timelines.js
@@ -2,6 +2,7 @@ module.exports = {
     'timelines': [
         {
             'name': 'Centurion',
+            'songFile': 'songs/centurion.m4a',
             'feed': [
 
                 {
@@ -2728,6 +2729,43 @@ module.exports = {
                     ]
                 }
             ]
+        },
+        {
+            'name': 'Totale isolatie',
+            'songFile': 'songs/totale_isolatie.m4a',
+            'feed': [
+                {
+                    'timestamp': 0,
+                    'events': [
+                        {
+                            'type': 'talk',
+                            'text': [
+                                'Ik heb geen tekst',
+                                'want het is veel werk'
+                            ]
+                        }
+                    ]
+                },
+                {
+                    'timestamp': 10,
+                    'events': [
+                        {
+                            'type': 'talk',
+                            'text': [
+                                'Nee echt',
+                                'niks'
+                            ]
+                        },
+                        {
+                            'type': 'song',
+                            'text': [
+                                'Blahblah',
+                                'blahblahblah'
+                            ]
+                        }
+                    ]
+                }
+            ]
         }
     ]
 }
diff --git a/backend/src/Room.ts b/backend/src/Room.ts
index d9aa685..3f04f4b 100644
--- a/backend/src/Room.ts
+++ b/backend/src/Room.ts
@@ -1,9 +1,14 @@
 import {Socket} from "socket.io";
 
 import User from "./User";
-import {getIndex, getNextShot, getTimeline, indexForTime} from "./timeline";
+import {getIndex, getNextShot, getTimeline, getTimelineNames, indexForTime} from "./timeline";
 import {getCurrentTime} from "./util";
 
+export interface RoomOptions {
+    seekTime: number
+    timelineName: string
+}
+
 export default class Room {
     id: number = 0;
     users: User[] = [];
@@ -14,6 +19,7 @@ export default class Room {
     currentSeconds = 0;
     timelineIndex: number = 0;
 
+    seekTime: number = 0;
     timelineName: string = 'Centurion';
 
     // For debugging purposes
@@ -31,6 +37,8 @@ export default class Room {
             'running': this.running,
             'startTime': this.startTime,
             'timelineName': this.timelineName,
+            'seekTime': this.seekTime,
+            'readyToParticipate': user.readyToParticipate || this.leader == user,
         }
     }
 
@@ -67,9 +75,17 @@ export default class Room {
     onBeforeDelete() {
     }
 
+    setOptions(options: any) {
+        this.seekTime = Math.max(0, Math.min(options.seekTime, 250 * 60 * 1000))
+        if (getTimelineNames().indexOf(options.timelineName) >= 0) {
+            this.timelineName = options.timelineName;
+        }
+        this.sync()
+    }
+
     start() {
         this.running = true;
-        this.startTime = getCurrentTime() - 1400 * 1000
+        this.startTime = getCurrentTime() - this.seekTime
 
         this.sync();
     }
diff --git a/backend/src/Service.ts b/backend/src/Service.ts
index b3e3c41..a31789d 100644
--- a/backend/src/Service.ts
+++ b/backend/src/Service.ts
@@ -1,7 +1,7 @@
 import {Socket} from "socket.io";
 
 import User from './User'
-import Room from './Room'
+import Room, {RoomOptions} from './Room'
 import {getCurrentTime, randomInt} from "./util";
 
 export default class Service {
@@ -11,6 +11,7 @@ export default class Service {
     onSocketConnect(socket: Socket) {
         let user = new User(socket);
         this.socketsToUsers.set(socket.id, user);
+        user.sync();
     }
 
     onSocketDisconnect(socket: Socket) {
@@ -36,6 +37,14 @@ export default class Service {
         })
     }
 
+    onSetRoomOptions(socket: Socket, options: RoomOptions) {
+        let user = this.getUser(socket);
+
+        if (user.room?.getLeader() == user) {
+            user.room!!.setOptions(options)
+        }
+    }
+
     onRequestStart(socket: Socket) {
         let user = this.getUser(socket);
 
@@ -56,9 +65,17 @@ export default class Service {
 
         let room = this.roomIdToRooms.get(roomId)!!;
         room.join(user);
+
         return true;
     }
 
+    onRequestReady(socket: Socket) {
+        let user = this.getUser(socket);
+        if (!user.room || user.readyToParticipate) return;
+        user.readyToParticipate = true;
+        user.sync();
+    }
+
     onRequestJoinRandom(socket: Socket) {
         let user = this.getUser(socket);
 
diff --git a/backend/src/User.ts b/backend/src/User.ts
index 290ddc6..b40145e 100644
--- a/backend/src/User.ts
+++ b/backend/src/User.ts
@@ -1,12 +1,14 @@
 import {Socket} from "socket.io";
 
 import Room from "./Room";
+import {getTimelineNames} from "./timeline";
 
 export default class User {
     socket: Socket;
     id: string;
 
     room: Room | null = null;
+    readyToParticipate: boolean = false;
 
     constructor(socket: Socket) {
         this.socket = socket;
@@ -24,6 +26,7 @@ export default class User {
 
         if (this.room != null) {
             this.socket.leave(this.room.id.toString());
+            this.readyToParticipate = false;
         }
 
         this.room = room;
@@ -35,18 +38,36 @@ export default class User {
         this.sync();
     }
 
+    getConfig() {
+        return {
+            'availableTimelines': getTimelineNames()
+        }
+    }
+
+    sentConfig: any = null;
     sentRoom: any = null;
     sentTimelineName: string | null = null;
 
     sync() {
-        if (!this.shallowEquals(this.sentRoom, this.room?.serialize(this))) {
+        // Config
+        let config = this.getConfig();
+        if (!this.syncEquals(this.sentConfig, config)) {
+            this.sentConfig = config;
+            this.emit('config', {
+                'config': this.sentConfig
+            });
+        }
+
+        // Room
+        if (!this.syncEquals(this.sentRoom, this.room?.serialize(this))) {
             this.sentRoom = this.room?.serialize(this);
             this.emit('room', {
                 'room': this.sentRoom
             })
         }
 
-        if (!this.shallowEquals(this.sentTimelineName, this.room?.timelineName)) {
+        // Timeline
+        if (!this.syncEquals(this.sentTimelineName, this.room?.timelineName)) {
             this.sentTimelineName = this.room?.timelineName || null;
             this.emit('timeline', {
                 'timeline': this.sentTimelineName == null ? null : this.room!!.serializeTimeline(this)
@@ -58,20 +79,30 @@ export default class User {
         this.socket.emit(eventName, obj);
     }
 
-    shallowEquals(obj1: any, obj2: any) {
+    syncEquals(obj1: any, obj2: any): boolean {
+        if (obj1 === undefined && obj2 === undefined)
+            return true;
+
+        if ((obj1 === undefined && obj2 !== undefined) || (obj1 !== undefined && obj2 === undefined))
+            return false;
+
         if (obj1 === null && obj2 === null)
             return true;
 
         if ((obj1 === null && obj2 !== null) || (obj1 !== null && obj2 === null))
             return false;
 
-        if (typeof (obj1) != typeof (obj2))
+        if (typeof (obj1) !== typeof (obj2))
             return false;
 
+        if (typeof (obj1) === 'string' || typeof (obj1) === 'number' || typeof (obj1) === 'boolean') {
+            return obj1 === obj2;
+        }
+
         if (Object.keys(obj1).length !== Object.keys(obj2).length) return false
 
         return Object.keys(obj1).every(key =>
-            obj2.hasOwnProperty(key) && obj1[key] === obj2[key]
+            obj2.hasOwnProperty(key) && this.syncEquals(obj1[key], obj2[key])
         );
     }
 }
diff --git a/backend/src/index.ts b/backend/src/index.ts
index a6cb73f..e0ec8ba 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -34,7 +34,15 @@ io.on('connection', socket => {
         service.onTimeSync(socket, requestId, clientTime);
     })
 
-    socket.on('request_start', () => {
+    socket.on('room_options', (options) => {
+        if (!options) return;
+        if (!options.timelineName || typeof (options.timelineName) !== 'string') return;
+        if (!Number.isSafeInteger(options.seekTime)) return;
+
+        service.onSetRoomOptions(socket, options);
+    });
+
+    socket.on('request_start', (options) => {
         service.onRequestStart(socket);
     });
 
@@ -44,6 +52,10 @@ io.on('connection', socket => {
         service.onRequestJoin(socket, roomId);
     });
 
+    socket.on('request_ready', () => {
+        service.onRequestReady(socket);
+    })
+
     socket.on('request_join_random', () => {
         service.onRequestJoinRandom(socket);
     })
@@ -66,23 +78,23 @@ io.on('connection', socket => {
             call.respond(service.hasRoomId(roomId));
             return;
         }
-
-        if (name == 'request_join') {
-            let roomId = params && params['roomId'];
-            if (!Number.isSafeInteger(roomId)) {
-                call.error('Invalid room id');
-                return;
-            }
-            if (!service.hasRoomId(roomId)) {
-                call.respond(false);
-                return;
-            }
-            if (service.onRequestJoin(socket, roomId)) {
-                call.respond(true);
-            } else {
-                call.respond(false);
-            }
-        }
+        //
+        // if (name == 'request_join') {
+        //     let roomId = params && params['roomId'];
+        //     if (!Number.isSafeInteger(roomId)) {
+        //         call.error('Invalid room id');
+        //         return;
+        //     }
+        //     if (!service.hasRoomId(roomId)) {
+        //         call.respond(false);
+        //         return;
+        //     }
+        //     if (service.onRequestJoin(socket, roomId)) {
+        //         call.respond(true);
+        //     } else {
+        //         call.respond(false);
+        //     }
+        // }
     })
 
     service.onSocketConnect(socket);
diff --git a/backend/src/timeline.ts b/backend/src/timeline.ts
index 8c75510..9afa7d3 100644
--- a/backend/src/timeline.ts
+++ b/backend/src/timeline.ts
@@ -2,6 +2,10 @@
 import timeline from '../data/timelines.js';
 
 
+export function getTimelineNames(): string[] {
+    return timeline.timelines.map((i: any) => i.name)
+}
+
 export function getTimeline(name: string) {
     let t = timeline.timelines.find((i: any) => i.name == name);
     if (!t) return null;
diff --git a/frontend/config-overrides.js b/frontend/config-overrides.js
index e9b672a..4236e05 100644
--- a/frontend/config-overrides.js
+++ b/frontend/config-overrides.js
@@ -1,4 +1,25 @@
-module.exports = function override(config, env) {
-    // do stuff with the webpack config...
-    return config;
-};
\ No newline at end of file
+module.exports = {
+    webpack: function (config, env) {
+        return config;
+    },
+    devServer: function (configFunction) {
+        // Return the replacement function for create-react-app to use to generate the Webpack
+        // Development Server config. "configFunction" is the function that would normally have
+        // been used to generate the Webpack Development server config - you can use it to create
+        // a starting configuration to then modify instead of having to create a config from scratch.
+        return function (proxy, allowedHost) {
+            // Create the default config by calling configFunction with the proxy/allowedHost parameters
+            const config = configFunction(proxy, allowedHost);
+
+            config.proxy = {
+                "/socket.io": {
+                    target: "http://localhost:3001",
+                    ws: true
+                }
+            }
+
+            // Return your customised Webpack Development Server config.
+            return config;
+        };
+    }
+}
diff --git a/frontend/src/components/Centurion.tsx b/frontend/src/components/Centurion.tsx
index 8460ce9..0d9f301 100644
--- a/frontend/src/components/Centurion.tsx
+++ b/frontend/src/components/Centurion.tsx
@@ -1,8 +1,7 @@
-import React, {useRef, useState} from "react";
+import React from "react";
 import {Row} from "antd";
-import {NumberParam, useQueryParam} from "use-query-params";
 
-import {roomTime, useRoom, useRoomRunningChanged, useTick} from "../lib/Connection";
+import {useRoomRunningAndReadyChanged} from "../lib/Connection";
 import NextShot from "./NextShot";
 import Feed from "./Feed";
 import ShotsTaken from "./ShotsTaken";
@@ -12,7 +11,8 @@ import logo from "../img/via-logo.svg";
 import Player from "./Player";
 
 const Centurion = () => {
-    let roomRunning = useRoomRunningChanged()?.running || false;
+    const room = useRoomRunningAndReadyChanged();
+    const showFeed = (room?.running && room.readyToParticipate) || false;
 
     const feedContent = (
         <React.Fragment>
@@ -32,7 +32,7 @@ const Centurion = () => {
     return (
         <>
             <section className="content">
-                {roomRunning ? feedContent : lobbyContent}
+                {showFeed ? feedContent : lobbyContent}
             </section>
             <footer>
                 <img src={logo} className="via-logo" alt="logo"/>
diff --git a/frontend/src/components/Feed.tsx b/frontend/src/components/Feed.tsx
index 4d02a77..76c60e3 100644
--- a/frontend/src/components/Feed.tsx
+++ b/frontend/src/components/Feed.tsx
@@ -1,23 +1,22 @@
-import React, {useRef} from 'react';
+import React from 'react';
 import {Col} from "antd"
 
 import {TimelineItem} from "../types/types";
 
 import FeedItem from "./FeedItem"
-import connection, {roomTime, useRoom, useRoomRunningChanged, useTimeline} from "../lib/Connection";
+import {roomTime, useTimeline} from "../lib/Connection";
 import {useUpdateAfterDelay} from "../util/hooks";
 import CSSTransition from "react-transition-group/CSSTransition";
 import TransitionGroup from "react-transition-group/TransitionGroup";
 
 const Feed = (props: any) => {
-    const roomRunning = useRoomRunningChanged()?.running || false;
     const timeline = useTimeline();
 
     useUpdateAfterDelay(500)
 
     let liveFeed: TimelineItem[] = [];
 
-    if (roomRunning && timeline != null) {
+    if (timeline != null) {
         liveFeed = timeline.feed.filter(item => {
             return item.timestamp * 1000 <= roomTime()
         });
diff --git a/frontend/src/components/Lobby.tsx b/frontend/src/components/Lobby.tsx
index 5013cbb..ba5609d 100644
--- a/frontend/src/components/Lobby.tsx
+++ b/frontend/src/components/Lobby.tsx
@@ -1,33 +1,40 @@
 import React, {MouseEvent, useState} from 'react';
-import {Input, Button, Card, Col, InputNumber, Row, Space, Divider} from "antd"
-import { red } from '@ant-design/colors';
+import {Button, Card, Col, Divider, Form, Input, InputNumber, Row, Select} from "antd"
+import {red} from '@ant-design/colors';
 
-import connection, {useIsConnected, useRoom} from "../lib/Connection";
+import connection, {useConfig, useIsConnected, useRoom} from "../lib/Connection";
 
 import "../css/lobby.sass";
 import beer from "../img/beer.png"
+import {RoomOptions} from "../types/types";
+
+const {Option} = Select;
 
 const Lobby = (props: any) => {
-    const [seekTime, setSeekTime] = useState(0);
+    // Form/control states.
     const [selectedRoomId, setSelectedRoomId] = useState(1);
-
+    const [seekTime, setSeekTime] = useState(0);
+    const [timelineName, setTimelineName] = useState(null);
     const [joiningLobby, setJoiningLobby] = useState(false);
     const [joinLobbyError, setJoinLobbyError] = useState(false);
 
+    // Room and logic states.
     const isConnected = useIsConnected();
     const room = useRoom();
+    const config = useConfig();
+
+    // @ts-ignore
+    const connectionType = connection.socket.io.engine.transport.name;
 
     let isLeader = room?.isLeader || false;
     let userCount = room?.userCount || 0;
 
     function handleRequestStartClicked(e: MouseEvent) {
-        e.preventDefault();
-
-        connection.requestStart();
+        connection.requestStart(seekTime * 1000);
     }
 
     function handleJoin(e: MouseEvent) {
-        // connection.requestStart();
+        connection.requestReady();
     }
 
     function applyRoomId(v: number) {
@@ -38,44 +45,79 @@ const Lobby = (props: any) => {
         setJoiningLobby(true)
     }
 
-    function joinRandomLobby() {
+    function handleJoinRandomLobby() {
         connection.requestJoinRandom()
         setJoinLobbyError(false);
     }
 
-    // const {socket} = useSocket("welcome", async (obj: any) => {
-    //     if (lobbyQueryId) {
-    //         // lobbyId is already defined, this means we have a queryparam set.
-    //         await onChangeLobbyInput(lobbyQueryId);
-    //         return;
-    //     }
-    //     console.log("Got welcome", lobbyQueryId);
-    //
-    //     setLobbyId(obj.room.name);
-    //     setIsLeader(socket.id === obj.room.leaderId);
-    //     setUserCount(obj.room.users?.length || 0);
-    // });
-
-    // const socketRef = useRef<SocketIOClient.Socket>(socket);
-
-    async function onChangeRoomInput(i: any) {
-        // setLobbyId(i);
-        // const result: any = await emit(connection.socket, 'join_room', i);
-        // setIsLeader(connection.socket.id === result.room.leaderId);
-        // setUserCount(result.room.users?.length || 0);
-        // connection.requestJoin(i);
+    function handleTimelineNameSet(timelineName: any) {
+        setTimelineName(timelineName);
+        connection.setRoomOptions(new RoomOptions(
+            seekTime || 0,
+            timelineName || room?.timelineName || ''))
     }
 
-    // useEffect(() => {
-    //     async function wrapper() {
-    //         const result: any = await emit(connection.current, 'room_info');
-    //         setIsLeader(connection.current.id === result.room.leaderId);
-    //         setUserCount(result.room.users?.length || 0);
-    //     }
-    //
-    //     wrapper();
-    // }, []);
+    function handleSetSeekTime(seekTime: number) {
+        setSeekTime(seekTime);
+        connection.setRoomOptions(new RoomOptions(
+            seekTime * 1000 || 0,
+            timelineName || room?.timelineName || ''))
+    }
 
+    let leaderConfig = (
+        <Row justify="center">
+            <Col>
+                <Form
+                    layout='horizontal'
+                    labelCol={{span: 8}}
+                    wrapperCol={{span: 24}}
+                >
+                    <Form.Item label="Starttijd">
+                        <Input
+                            type="number"
+                            suffix="sec"
+                            value={seekTime}
+                            onChange={v => handleSetSeekTime(parseInt(v.target.value) || 0)}/>
+                    </Form.Item>
+
+                    <Form.Item label="Nummer">
+                        <Select defaultValue={(room && room.timelineName) || ''}
+                                onChange={e => handleTimelineNameSet(e)}>
+                            {config && config.availableTimelines.map((item, i) =>
+                                <Option key={item} value={item}>{item}</Option>
+                            )}
+                        </Select>
+                    </Form.Item>
+
+                </Form>
+
+                <Button
+                    block
+                    type="primary"
+                    onClick={handleRequestStartClicked}>Start</Button>
+            </Col>
+        </Row>
+    )
+
+    let nonLeaderConfig = (
+        <Row justify="center">
+            <Col>
+                <p>
+                    We gaan luisteren naar <b>{room && room.timelineName}</b> en
+                    {room?.running && <span> zijn al gestart!</span>}
+                    {!room?.running && <span> starten op {room?.seekTime} seconden</span>}
+                </p>
+
+                <Button
+                    block
+                    type="primary"
+                    disabled={!room || room.readyToParticipate}
+                    onClick={handleJoin}>{room && room.readyToParticipate ? 'Wachten op het startsein' : 'Kom erbij'}</Button>
+            </Col>
+        </Row>
+    )
+
+    // @ts-ignore
     return (
         <div className="lobby">
             <Row>
@@ -106,51 +148,28 @@ const Lobby = (props: any) => {
 
             {isConnected &&
             <Row justify="center">
-                <Col xs={12} sm={10} md={10} xl={6}>
+                <Col xs={24} sm={16} md={12} xl={10}>
                     <Card>
                         <h3>Huidige lobby: <b>{room?.id || 'Geen lobby'}</b></h3>
 
-                        <Row>
-                            <Col>
-                                {userCount === 1 ?
-                                    <p>Er is één gebruiker aanwezig.</p>
-                                    :
-                                    <p>Er zijn {userCount} gebruikers aanwezig.</p>
-                                }
-
-                                <p>{isLeader ? 'Jij bent de baas van deze lobby.' : 'Wachten tot de baas de mix start.'}</p>
+                        {/*<span>Verbonden met {connectionType}</span>*/}
 
-                            </Col>
-                        </Row>
-
-                        <Row>
-                            <Col>
-                                {isLeader &&
-                                <span>Start de mix op
-                                <Input
-                                    type="number"
-                                    min={0}
-                                    max={60000}
-                                    suffix="sec"
-                                    value={seekTime}
-                                    onChange={v => setSeekTime(parseInt(v.target.value) || 0)}/>
-                                </span>
-                                }
-                            </Col>
-                        </Row>
-
-                        {isLeader ?
-                            <Button
-                                block
-                                type="primary"
-                                onClick={handleRequestStartClicked}>Start</Button>
-                            :
-                            <Button
-                                block
-                                type="primary"
-                                disabled={!room}
-                                onClick={handleJoin}>Join</Button>
+                        {room &&
+                        <span>
+                            {userCount === 1 ?
+                                <p>Er is één gebruiker aanwezig.</p>
+                                :
+                                <p>Er zijn {userCount} gebruikers aanwezig.</p>
+                            }
+                        </span>
                         }
+                        {room &&
+                        <span>Deel de link met je vrienden om mee te doen!</span>
+                        }
+                        <br/>
+                        <br/>
+
+                        {room && (isLeader ? leaderConfig : nonLeaderConfig)}
 
                         <Divider/>
 
@@ -185,7 +204,7 @@ const Lobby = (props: any) => {
                             <Col>
                                 <Button type="primary"
                                         onClick={() => {
-                                            joinRandomLobby()
+                                            handleJoinRandomLobby()
                                         }}>Join een willekeurige lobby</Button>
                             </Col>
                         </Row>
diff --git a/frontend/src/components/NextShot.tsx b/frontend/src/components/NextShot.tsx
index c9f565d..0a13ec3 100644
--- a/frontend/src/components/NextShot.tsx
+++ b/frontend/src/components/NextShot.tsx
@@ -1,14 +1,10 @@
-import React, {useRef, useState} from 'react';
+import React from 'react';
 import {Col, Progress} from "antd"
-import {useSocket} from "use-socketio/lib";
-
-import {Tick} from "../types/types";
-import connection, {roomTime, useRoom, useTimeline} from "../lib/Connection";
+import {roomTime, useTimeline} from "../lib/Connection";
 import {useUpdateAfterDelay} from "../util/hooks";
 
 
 const NextShot = () => {
-    const room = useRoom()
     const timeline = useTimeline()
 
     useUpdateAfterDelay(1000)
@@ -16,7 +12,7 @@ const NextShot = () => {
     let remainingTime = 0;
     let remainingPercentage = 0;
 
-    if (room?.running && timeline) {
+    if (timeline) {
         const time = roomTime();
         const [current, next] = timeline.itemAtTime(time, 'shot');
 
diff --git a/frontend/src/components/Player.ts b/frontend/src/components/Player.ts
index 3155d04..b5a01b4 100644
--- a/frontend/src/components/Player.ts
+++ b/frontend/src/components/Player.ts
@@ -1,20 +1,41 @@
-import {roomTime, useRoom, useRoomRunningChanged, useRoomTime, useTick} from "../lib/Connection";
-import {useRef} from "react";
+import {roomTime, useRoomRunningAndReadyChanged, useRoomTime, useTimelineSongFileChanged} from "../lib/Connection";
+import {useRef, useState} from "react";
 
 
 const Player = () => {
-    const roomRunning = useRoomRunningChanged();
+    const roomRunning = useRoomRunningAndReadyChanged();
     const _ = useRoomTime()
-    console.log('PLAYER RENDER', roomTime)
+    const timeline = useTimelineSongFileChanged();
 
-    const player = useRef(new Audio("centurion.m4a"));
+    const player = useRef(timeline ? new Audio(timeline.songFile) : null);
 
-    if (roomRunning?.running) {
+    const [timesSeeked, setTimesSeeked] = useState(0);
+
+    // If our time synchronisation algorithm thing thinks the time is off by more
+    // than this value, we seek the running player to correct it.
+    const diffSecondsRequiredToSeekRunningPlayer = 0.20;
+
+    // Hard cap we are allowed to seek this player. Some browsers are slow or inaccurate
+    // and will always be off. To avoid endless skipping of the song this cap stops seeking the
+    // player.
+    const maxTimesSeekAllow = 20;
+
+    if (player.current && roomRunning?.running && roomRunning.readyToParticipate) {
         let targetTime = roomTime() / 1000;
         let diff = player.current.currentTime - targetTime;
-        console.log('PLAYER DIFF', diff);
-        if (Math.abs(diff) > 0.1) {
-            player.current.currentTime = targetTime;
+
+        console.log('PLAYER DIFF', 'Our time diff with the server: ', diff,
+            'Time required to seek (seconds): ', diffSecondsRequiredToSeekRunningPlayer);
+
+        if (Math.abs(diff) > diffSecondsRequiredToSeekRunningPlayer) {
+            if (timesSeeked < maxTimesSeekAllow) {
+                player.current.currentTime = targetTime;
+                setTimesSeeked(timesSeeked + 1);
+                console.log('SEEKED', 'The running player time was seeked, times seeked: ' + timesSeeked);
+            } else {
+                console.warn('The running player is off, but we\'ve changed the time ' +
+                    'too often, skipping synchronizing the player.');
+            }
         }
 
         if (player.current.paused) {
@@ -23,7 +44,9 @@ const Player = () => {
             })
         }
     } else {
-        player.current.pause();
+        if (player.current) {
+            player.current.pause();
+        }
     }
 
     return null;
diff --git a/frontend/src/components/ShotsTaken.tsx b/frontend/src/components/ShotsTaken.tsx
index 09bfc9f..2dc2061 100644
--- a/frontend/src/components/ShotsTaken.tsx
+++ b/frontend/src/components/ShotsTaken.tsx
@@ -1,22 +1,17 @@
-import React, {useState} from 'react';
+import React from 'react';
 import {Col, Progress} from "antd"
-import {useSocket} from "use-socketio/lib";
-
-
-import {Tick} from "../types/types";
-import {roomTime, useRoom, useTimeline} from "../lib/Connection";
+import {roomTime, useTimeline} from "../lib/Connection";
 import {useUpdateAfterDelay} from "../util/hooks";
 
 
 const ShotsTaken = () => {
-    let room = useRoom();
     let timeline = useTimeline();
 
     useUpdateAfterDelay(1000);
 
     let taken = 0;
 
-    if (room?.running && timeline) {
+    if (timeline) {
         let [current, _] = timeline.eventAtTime(roomTime(), 'shot');
         if (current) {
             taken = current.shotCount!!;
diff --git a/frontend/src/css/index.sass b/frontend/src/css/index.sass
index 79d00fa..4cb6b84 100644
--- a/frontend/src/css/index.sass
+++ b/frontend/src/css/index.sass
@@ -25,6 +25,7 @@ body
 
 
 .via-logo
+  z-index: -10000
   position: fixed
   right: 0
   bottom: 0
diff --git a/frontend/src/css/lobby.sass b/frontend/src/css/lobby.sass
index 43515ea..c31c11f 100644
--- a/frontend/src/css/lobby.sass
+++ b/frontend/src/css/lobby.sass
@@ -2,7 +2,7 @@
   .centurion-title
     text-align: center
 
-    font-size: 3.0rem
+    font-size: 2.5rem
     min-height: inherit
 
     .text
@@ -28,7 +28,7 @@
 
   .hints
     margin: 1rem 0 0 0
-    font-size: 2rem
+    font-size: 1.5rem
     text-align: center
 
   .control
diff --git a/frontend/src/lib/Connection.ts b/frontend/src/lib/Connection.ts
index dc6353c..e4152cb 100644
--- a/frontend/src/lib/Connection.ts
+++ b/frontend/src/lib/Connection.ts
@@ -2,7 +2,7 @@ import io from "socket.io-client";
 import {useEffect, useState} from "react";
 import {parse as parseQueryString, stringify as stringifyQueryString} from 'query-string';
 
-import {Room, Tick, Timeline} from "../types/types";
+import {Config, Room, RoomOptions, Timeline} from "../types/types";
 import {Sub, useSub} from "../util/sub";
 
 class Connection {
@@ -10,8 +10,8 @@ class Connection {
 
     socket: SocketIOClient.Socket;
 
+    config = new Sub<Config | null>();
     room = new Sub<Room | null>();
-    tick = new Sub<Tick | null>();
     timeline = new Sub<Timeline | null>();
 
     timeSyncIntervals = [500, 1000, 3000, 5000, 10000, 30000];
@@ -47,13 +47,15 @@ class Connection {
             this.onDisconnect();
         })
 
+        this.socket.on('config', (data: any) => {
+            this.config.set(data.config);
+        })
+
         this.socket.on('time_sync', (data: any) => {
             this.timeSyncResponse(data.requestId, data.clientDiff, data.serverTime);
         })
 
         this.socket.on('room', (data: any) => {
-            console.log('ROOM', data.room);
-
             if (data.room) {
                 this.setQueryLobbyId(data.room.id);
             }
@@ -61,10 +63,6 @@ class Connection {
             this.room.set(data.room);
         });
 
-        this.socket.on('tick_event', (data: any) => {
-            this.tick.set(data.tick);
-        });
-
         this.socket.on('timeline', (data: any) => {
             if (data.timeline) {
                 this.timeline.set(new Timeline(data.timeline));
@@ -122,7 +120,6 @@ class Connection {
         } else {
             delete query.lobby;
         }
-        console.log('QUERY', query);
         let newUrl = window.location.protocol + "//" + window.location.host +
             window.location.pathname + (Object.keys(query).length ? ('?' + stringifyQueryString(query)) : '');
         window.history.pushState({}, '', newUrl);
@@ -144,8 +141,14 @@ class Connection {
         });
     }
 
-    requestStart() {
-        this.socket.emit('request_start');
+    setRoomOptions(roomOptions: RoomOptions) {
+        this.socket.emit('room_options', roomOptions)
+    }
+
+    requestStart(seekTime: number) {
+        this.socket.emit('request_start', {
+            seekTime: seekTime
+        });
     }
 
     async requestJoin(roomId: number): Promise<boolean> {
@@ -159,6 +162,10 @@ class Connection {
         })
     }
 
+    requestReady() {
+        this.socket.emit('request_ready');
+    }
+
     requestJoinRandom() {
         this.socket.emit('request_join_random');
     }
@@ -279,16 +286,20 @@ export function useRoom(): Room | null {
     return useSub(connection.room);
 }
 
-export function useRoomRunningChanged(): Room | null {
-    return useSub(connection.room, (v) => [v && v.running]);
+export function useConfig(): Config | null {
+    return useSub(connection.config);
+}
+
+export function useRoomRunningAndReadyChanged(): Room | null {
+    return useSub(connection.room, (v) => [v && v.running && v.readyToParticipate]);
 }
 
 export function useTimeline(): Timeline | null {
     return useSub(connection.timeline);
 }
 
-export function useTick(): Tick | null {
-    return useSub(connection.tick);
+export function useTimelineSongFileChanged(): Timeline | null {
+    return useSub(connection.timeline, (v) => [v && v.songFile]);
 }
 
 export function useRoomTime(): number {
diff --git a/frontend/src/types/types.ts b/frontend/src/types/types.ts
index 22d2782..ec1eaea 100644
--- a/frontend/src/types/types.ts
+++ b/frontend/src/types/types.ts
@@ -10,20 +10,39 @@ export interface Tick {
     }
 }
 
+export interface Config {
+    availableTimelines: string[]
+}
+
 export interface Room {
     id: number,
     userCount: number,
     isLeader: boolean,
     running: boolean,
-    startTime: number
+    startTime: number,
+    seekTime: string,
+    timelineName: string,
+    readyToParticipate: boolean
+}
+
+export class RoomOptions {
+    seekTime: number
+    timelineName: string
+
+    constructor(seekTime: number, timelineName: string) {
+        this.seekTime = seekTime;
+        this.timelineName = timelineName;
+    }
 }
 
 export class Timeline {
     name: string
+    songFile: string
     feed: TimelineItem[]
 
     constructor(obj: any) {
         this.name = obj.name;
+        this.songFile = obj.songFile;
         this.feed = obj.feed;
     }