Ok so I think I might have found a way around the video out issues. I'm going to run through my idea for the set up using links etc. so try to follow along. Hopefully you guys can help me with if this will or will not work.
Ok so using the Samsung Galaxy 10.1 Tablet I'm wanting to do the custom in dash set up. I'll do this with fiberglass and the Galaxy 10.1 Tab Multi-Media Dock and integrate it into the fiberglass pan. I don't know what the internals of this docking station looks like but I have to think, if you look at the gallery, that all the internal parts (i.e. boards etc) are residing in the box in the back. If that's the case, no pun intended, then I'll hack it out and mold it into the fiberglass pan.
From there to get my signal I'll utilize the Galaxy Tab Adapter (HDTV) for the output. This adapter has an HDMI output on the end of it, and if you go into the gallery in the link and zoom in, you'll see on the second picture it has a second port out for the 30 pin connector. I'll get to that in a moment.
From the HDMI output I'll need to break that signal up and turn it into a composite signal (RCA's R/L and Video). I can do this with this a module/converter I think. This is the converter I found called the Monoprice HDMI to VGA & R/L Stereo Audio Converter. I can get a universal car charger and hard wire it to power it up.
Out of the HDMI converter I can use the audio outputs L/R and run those to the Bit One Processor. For the video I'd use a VGA to S-Video/RCA (Composite) Adapter Cable and run a video cable from the RCA (yellow) to the head rest monitors. To get the audio to the head rest monitors for the IR headphones I can use a 3.5mm Stereo Male To 2X RCA Female Adapter out of the 3.5mm jack in the dock and run RCA's to the monitors audio inputs.
Back at the Galaxy Tab Adapter. I was talking about a second 30 pin port. This port will house the Galaxy Tab™ 30-pin Vehicle Power Adapter with Detachable Cable. The charger, again, will be hard wired to an ignition source so it's not an always on thing and that will take care of charging the Galaxy.
I think that about covers everything! I know it's alot to hook up, but honestly it's ok with me, as long as I get the end result I'm looking for which is a good audio signal to the bit one processor, and video out to the head rest monitors.
So can anyone out there tell me if they think this will work or not. And if not, can you please help me to understand why it wouldn't work please? Thanks! I'm very excited if this is going to work cause this will put me one step closer to starting this project!