The "thin pinstripe" version of the volume slider app is due to Jelly Bean, not cyanogenmod. It is also a thin pinstripe on my stock rom nexus10.
I feel your pain regarding getting a pure digital high sample rate signal out of a tablet. APT-X will hopefully gain in popularity, but if you want to get this project started soon, it may not be a viable option. I wish I had the "awesomeO-5000" answer for you, but if I had that, I would've used it as well. Good luck!
Might just go for the Nexus 7. It's 7" so easy to install, and has all the USB stuff working. Will just have to live without a mic.
And to the OP, nice build, looks clean. I'm also messing with a tablet for the truck, but only mounting it temporarily while I work on the actual pc. But if I end up liking the tablet, I'll probably keep both, I've got the dash space for it. I'll be watching your thread for more great ideas, thanks.
So I may need some input from you SDB. I took my entire dash apart tonight to take measurements and see what space was behind it, and its not good news. I had originally planned to push the factory headunit back and continue to use it as my amp for the tablet, but the headunit takes up all the space behind the dash. I also wanted to do this so that I could mount the tablet in front of the headunit and have the tab be removable, both for security and so I can use the factory stereo in those moments of need. Without heavy modification to both the dash and the headunit, none of this is possible. Also, my tab is literally like 1/16" too tall top to bottom, when in lansdcape, to fit in the dash hole. I basically didnt catch a single break.
I really wanted to be as close to stock as possible or be able to get back to stock pretty easily, and Im not thrilled about possibly losing the radio function of my car. I personally hardly use it but when driving friends or ladies around, its nice to let them pick the music from the radio and just let it go. Also, once I lose the headunit, I lose my steering wheel controls without installing a fairly costly adapter. Then theres the matter of modifying the dash to allow the tab to be removable. I know how I want to do this, but trimming away the factory dash plastic seems like it could easily turn bad and have that crappy unfinished look. Arg.
So my question is, do you have any input on a decent amp for powering factory speakers in a vehicle? Small enough to fit inside my dash headunit hole would be awesome but somehow I doubt thats possible. My other option would be to mount it under the passenger seat which has plenty of room, and run the cabling either along the door jam and under the glove box, or under the center console. Optimally Im trying not to blow a ton of money here as this install has already gotten way out of hand.
Lastly, Im on an unlocked iphone through Tmobile so Im running the slowest cell connection ever since it wasnt really made for that, pretty much useless for streaming web music. I might have to upgrade to a phone that is meant for the Tmobile network so that I can get 3g speeds and then have radio through tune-in radio and the like. Theres another few hundred. Lol.
One option, though probably not one that you're a fan of, is to sell the Tab2 and get something like a Nexus7. The Nexus7 isn't quite as tall as the Tab2 in landscape, so it should fit in your space. Keep in mind that the Nexus7 is a bit wider in landscape mode, however. You could also get the new Nexus7 that has GSM built in. It's labelled as AT&T from Google's specs, but it is an unlocked device, so it should work on your TMobile network, though you should probably confirm that.
For a small amp to power factory speakers, I'd look into the bybyte amp (LINK). VERY small, and provides as much power as most aftermarket head units. I have never used one personally, but a guy on the vette forums installed a Nexus7 in his vette using this bybyte amp with success. It's specifically designed for Carputer applications so it should work well for you. Out of curiosity, what steering wheel controls adapter are you referencing?
An unlocked iPhone on TMobile's network should deliver 3G speeds. I have friends that have done this before, unless I'm remembering incorrectly. To be honest, having a tablet as your stereo is certainly cool, but I honestly don't think the project is worth it if you aren't delivering internet access to it somehow. That's where the features of having a tablet in your dash really shine. Without internet access, it's really just a pretty screen that plays audio from a hard drive. I took on my project because I think it's cool to have access to email, voicemail, cloud storage, maps, Google Now, and much more via a tablet in my dash.
I think I covered your questions, lemme know if there's anything I missed. I haven't been getting notifications from mp3car.com lately, so I'll do a better job of checking this thread in the future.