am f560ceab: Merge "Audio Effects: fix problems in volume control." into gingerbread

Merge commit 'f560ceabe11b4f541c568bead61a5ec8f527151c' into gingerbread-plus-aosp

* commit 'f560ceabe11b4f541c568bead61a5ec8f527151c':
  Audio Effects: fix problems in volume control.