@Ashley The sound now works on android phone and ie9 also as a m4a :)
Thanks 4 ur help, efforts and time.
One more thing... I have a music file with size of 2.7 M. when i try the game on Galaxy S2 without the music file it works in a great way, but when i put the music file the game will be very slow and the music starts to crush, stop, freeze, ...
Playing music can cause a performance hit on some devices. It's a hardware limitation I think. Many phones have weak hardware and extra work like playing audio can slow them down.
All I can think of is make sure you're not constantly setting any audio properties - so don't change the volume every tick or anything like that. If that doesn't help... maybe wait for directCanvas, which should be faster and leave more time for processing audio.