Same problem here, can't get it to work on the XDK at all. Tried moving the sounds to the music folders but to no avail.
They gave this response on the link in the first page of this thread:
"We found a bug that dealt with AppMobi.player.loadSound(a) when used with construct2. You can work around this by adding a second paramerter to the loadSound call.
CODE: SELECT ALL
AppMobi.player.loadSound(a) // current call
AppMobi.player.loadSound(a,1) // change it to
Rebuild your ad hoc app and it will work."
However I don't know any coding and have no idea where to find this. Anyone able to guide me through this? Thanks!