Well, good news and bad news on this project. Good news is that it works like it is supposed to, and I'm pretty pleased. The bad news is that the DEQ won't process the digital signal. Considering that I purchased 2 (one for my car, one for my truck), I'll now be parting with 2 *lol*. I bought a little $50 DAC that should have done the trick, but it doesn't. The Toslink to 3.5 adapter isn't recognized by the Tab or my cell phone, so that idea has been tossed. Now I have these 2 DIN sized openings that I have to fill *lol*. I was thinking of a cb in one, haven't decided on the other quite yet.
I tether the unit to my phone's Internet connection for interwebs access. PowerAmp runs the MP3s nicely, and it has a built-in 11 band EQ, so I do have some flexibility even w/out the DEQ. Everything is just combined into this relative easy, simplistic interface that is very portable. For those looking for an alternate method to overcoming the traditional limitations of so many GPS enabled sat/nav radios, I'd highly suggest it.
As far as mounting, I'm using an OEM Samsung Tab car mount, primarily b/c it has a built in charger. I've removed my rear view mirror and am considering fabbing up something that uses the rearview bracket instead of the suction cup. I decided to rock out like that for the next couple weeks to see how it works out, and then make a decision.
I've loaded Samba FileSharing onto the phone and the tab, so I can browse to them wireless from my laptop and transfer music/videos/etc to them. I'm pretty pleased with the simplicity and portability, and look forward to completing the rest of the sound system w/the edition of some sound deadening (lots!) and another amp and a sub.
Immediate plans include hard-wiring the car charger, hard-wiring the phone charger, rooting the Tab, and deciding on whether or not I'd like to acquire a telephone number for it.