When playing in the background mode there is mute playback after returning from the youtube interruption

Galaxy Tab 10
Android 4.0.4

Steps:
1. Play any station in XiiaLive
2. Go into the background playback mode by tapping Home button
3. Open up the Youtube app for Android
4. Whatch any video in the youtube app
5. Close the youtube app

Actual Result
XiiaLive restores playing in the background mode but without any sound
Exp. Result
The Xiialive playback with the sound restored

What helped me to restore the sound:
1. Long tap the Home button to call up the currently running applications list window
2. Tap the Clear memory button - result: the sound is heard