clongjax

Try movies from the SD card slot.

 

 Also make sure your phone is not connected to the head unit while playing movies.

 

I have the 4200nex with an overhead monitor installed.  Unfortunately mine doesn't have speakers or infrared, so I can't try it for you.

Thanks will do that and report my findings.

Just installed the NEX 4200 in my truck and I am loving it.  Installed a rear screen for my 2 year old son and the infrared works great for the DVD but when I switch to content on my USB drive, it will display fine but no audio is routed out of the rear audio port.  I can hear sound fine through the speakers but if I try to listen to music, he can't hear any audio like when I'm playing a DVD.  Any ideas?  Thanks in advance for any help or understanding!