Hi jomo and jayderyu
So far, my game Bobo Jump at google play ( play.google.com/store/apps/details ) uses about 30-50 seconds of background musics. Tested on galaxy s3, and galaxy note 1 and I didnt noticed any hang issues on my phone yet. (Compiled using 1.4.3)
Though it is a bit headache when it comes to html5 audio.
Before this I did noticed the hang issues , audio still looping in background and etc with cocoonjs.
I just make sure that my audio is not mono and convert to wav using audacity.
Then I just import to Construct 2 and let it generate ogg and m4a for me. If Construct 2 complains about error in ogg or m4a, then it probably a problem with the wav file (maybe it is mono or something else).
But I'm just using samsung phones, so I dont know if other brands have different results.