Heh I was running into this today when I finally got my game working on Android, sound would randomly cut off after a short play session and no more sounds at all. Music however, plays fine!
It seems to not affect music normally. However, on suspend and resume, there's no audio whatsoever.
Jesus google chromium always manages to reintroduce breaking bugs. /facepalm
I'm going to test playing this sound every second to see if it resolves the issue. But this is impacting Webview & XDK Crosswalk.