I'm sure this AV input can be successfully used (as some have so reported), so my question still remains, what IS the audio input? If it goes to the TV tuner, then it must be mono, so why a stereo socket? Or, does it use an alternative input?

I have been pondering the idea of iPod video (or any other video source in fact) and the problem is that the AV audio input is mono. Surely an OEM BMW all singing, all dancing DVD option cannot be limited to mono. Can it?

Has anyone arranged stereo audio in conjuncion with video to the front screen? It occurs to me that this could be tricky as you would need to be able to independently select an audio input and video input. Is this possible?