Im using my av receiver to deliver the sound for all home theater sources. Lets say Im playing music from my music library, and have a tv channel opened in the minor window in the Pic in Pic setup. I cant seem to get the focus to change such that im hearing sound from just one of the two sources.. Instead, i hear the music from the music source AND the sound from the tv in the small pic window. Muting mutes the receiver which mutes both sources. Is there a way to hear the sound from just one of the 2 items using the picture in picture space? While we're talking about pic in pic, how bout the ability to swap big pic and small pic? Lastly, when watching tv, is there any way to perform the function of 'last channel' which our cable remotes usually call 'Last' or 'Recall'?