Also the Android engine "downgrades" the AAC+ quality from 44khz to 22khz... :-(

Thanks for your ideas. I made the tests and the results are:

1.    My Galaxy Nexus is running Android 4.0.4

2/3. a) With the Android engine the MP3 stream is working normal, the AAC+ stream is interrupting when the display goes off...

       b) With the FFMpeg engine both MP3 and AAC+ streaming are working perfect !

P.S. I will test the volume using the FFMpeg engine and I will give you the results in the next post.

Also if you need help with testing the next updates of XiiaLive - I'm selling mobile phones so I have different models around :-) .