Too simple.
I'd have it planted in my bedroom and recognize me in different situations thus prompting the appropriate music from my computer.
For example -- if I were walking into my room with a girl, the camera would recognize it and start playing some smooth RnB, like Isaac Hayes, automatically. When the action starts to heat up, it would start playing more modern RnB like Pretty Ricky or some ****. When I'm finished, it would play some instrumentals on low.
Not bad, right?