How to Pimp My Android Tablet?

At Christmas I got an $89 Android tablet by MID. The 7" tablet has sufficient RAM, etc. The battery, however, was rather pathetic out of the box. It's already fading, so we know where this is headed — decent tablet, but it constantly needs the plug. How would you take this 'old' tablet and turn it into a rockin' stereo component? Is there a ROM build out there titled Pimp My Tablet Into An MP3 Player? The current music app can look up lyrics on-line. I'd like to keep that feature. Any ideas on a good app for syncing music videos with my *ahem* random music collection? Any fun, off-beat party apps this middle-aged suburban dad hasn't heard of? Since the Android security nightmare is so well documented, I'd rather not use services that require passwords. I also need top-notch security and monitoring software so I can see what my kids and their friends are doing with it next year when I'm not home while keeping them anonymous and safe on-line. As for my living room stereo system, how best to mount a sleek MP3 tablet? I was thinking velcro, but it would ruin the feel. Maybe a wall-mount arm like my HDTV has? We want to be able to unplug it and move around the room, so I'll need to upgrade the speakers to wireless. Any thoughts there? I'm not afraid of the command line — indeed, I insist on one — but no Gentoo-type projects, thank you. Just a good sleek and secure ROM for optimal tunage with all the top apps the kids are using today