In my manifest file I\'ve add the audio-channel-content in permissions:
\"permissions\": { \"audio-channel-content\":{\"description\":\"Use the audio cha
The code and permission block you have are correct and I can confirm it is working in Firefox OS 1.1. You can also do the whole thing in Javascript:
audio = new Audio(); audio.preload = 'none'; audio.mozAudioChannelType = 'content';