This is a ffmpeg wrapper that will take in multiple audio files and combines them into a single file. Silent gaps will be put between the parts so that every new part starts from full second and there is at least 1 second pause between every part. The final file will be exported in mp3, ogg, ac3, m4a and caf(IMA-ADPCM) to support as many devices as possible. This tool will also generate a JSON file that is compatible with Howler.js or zynga/jukebox framework. iOS, Windows Phone and some Android phones have very limited HTML5 audio support. They only support playing a single file at a time and loading in new files requires user interaction and has a big latency. To overcome this there is a technique to combine all audio into single file and only play/loop certain parts of that file. zynga/jukebox is a audio framework that uses this technique. digitalfruit/limejs is a HTML5 game framework that includes Jukebox and lets you add audio to your games using audio sprites.