I've seen this, (I know a couple of the dev team) and from what I can gather its a cd emulator, similar to the intravee but uses the sd slot to "store and retrieve" the mp3s.

It's a very slick piece of kit.

I don't think it has a AV in (or out), but does have an i-bus interface.

Something like this would be ideal as the basis for a nav project, interfacing the video and software porting would be the challenge.

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.