1270 TV in Motion interface is a Just Cable which allow you watch TV while you drive, not a TV module which has Audio/Video Inputs,
I can clearly see that doesn't even have Audio/Video Inputs, how did you expect it will provide stereo input?
I see you have Hybrid Tuner, doesn't it have audio input but video input only?
how about source selector? switch from TV to DVD Player or whatever is connected.
anyway, try this.
Get BMW Auxiliary Audio Input cable, something like this goes behind Nav screen.
so you can access AUX mode.
http://cgi.ebay.com/ebaymotors/BMW-A...spagenameZWDVW
and get Y-adapter, something like this, 2 RCA inputs + 1 1/8" Stereo Jack,
connect Y-Adapter to Aux input cable, connect your White and Red RCA cables from DVD player to Y-Adapter.
now you should able to listen audio through AUX mode.
Good Luck.