I just recently purchased the F90 and two LCD headrests for the back seat. I can play a DVD and pipe it back to the headrest just fine. However, I would like to have the DVD player playing in the background continuing to send the DVD signal through the A/V outputs so my kids can enjoy a movie via headphones, while I enjoy the radio/ipod/whatever on the car's speakers.

Does anyone have any ideas on how I can make this work?

I think you can only use one A/V at the time + map. Could be wrong though.

I don't think the F Series is capable of that. Whatever shows on the 90 will show on the headrests, you can't have 2 sources playing at once.