New Twiddle

components.audio-player.js

import Ember from 'ember';

export default Ember.Component.extend({
  audioPlayer: Ember.inject.service('audio-player'),
  actions: {
  	start(){
  		this.get('audioPlayer').start()
  	},
  	stop(){
  		this.get('audioPlayer').stop()
  	},
  	next(){
  		this.get('audioPlayer').nextSong()
  	},
  	previous(){
  		this.get('audioPlayer').previousSong()
  	}
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
});

services.audio-player.js

import Ember from 'ember';

export default Ember.Service.extend({
  ids: [0,1,2,3,4,5,6,7,8,9,10],
  songs: Ember.computed('ids',function(){
  	return this.get('ids').map(id => {
  		return { id: id, title: `Awesome Song ${id}`}
  	})
  }),
  currentlyPlaying: '',
  currentIndex: 0,
  currentStatus: 'stopped',
  start(){
  		this.setSongByIndex()
  		this.set('currentStatus','playing')
  	},
  	stop(){
  		this.set('currentStatus','stopped')
  	},
  	nextSong(){
  		const maxIndex = this.get('ids.length') - 1
  		const currentIndex = this.get('currentIndex')
  		const nextIndex = currentIndex + 1
  		if(nextIndex > maxIndex){
  			this.stop()
  		}else{
  			this.set('currentIndex',nextIndex)
  			this.setSongByIndex()
  		}
  	},
  	previousSong(){
  		const maxIndex = this.get('ids.length') - 1
  		const currentIndex = this.get('currentIndex')
  		const prevIndex = currentIndex - 1
  		if(prevIndex < 0){
  			this.stop()
  		}else{
  			this.set('currentIndex',prevIndex)
  			this.setSongByIndex()
  		}
  	},
  	setSongByIndex(){
  		const songs = this.get('songs')
  		const currentIndex = this.get('currentIndex')
  		this.set('currentlyPlaying',songs[currentIndex])
  	}
});

templates.application.hbs

{{audio-player}}

templates.components.audio-player.hbs

Song Title: {{audioPlayer.currentlyPlaying.title}} <br/>
Audio Player Status: {{audioPlayer.currentStatus}} <br/>
<button {{action 'start'}}>Start</button> |
<button {{action 'next'}}>Next</button> |
<button {{action 'previous'}}>Previous</button> |
<button {{action 'stop'}}>Stop</button> |

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}