Manual Pg 36
You can listen to the audio of one input source while
watching the video of another. This function takes
advantage of the fact that when an audio-only input source
(PC, TV/CD, PHONO) is selected, the video input source
remains unchanged. The following procedure shows how
to listen to a CD player’s audio source connected to
TV/CD IN while watching a Blu-ray Disc/DVD player’s
video source connected to BD/DVD.
1 Press BD/DVD.
2 Press TV/CD.
The audio output changes to the CD source, but the
video of previously-selected BD/DVD is retained.
3 Start playback on your Blu-Ray Disc/DVD and CD
You can now enjoy watching your Blu-ray Disc/DVD
with the sound of your CD player.
I assume that will work, as long as your USB is audio-only,