Kenwood knows mp3 players are where it's at: they've built USB connections into their newest line of car stereos, including the smoothly-named KDC-MP632U. Four of the six models have the cable built-in, which seems like it would limit your player options, but the two larger models have ports in the front so if your mp3 player has an oddly-shaped cable (like the iPod) you should have no problems making a connection. Once you've plugged in the player/hard drive/computer, the stereo's software reads the standard ID3 tags and tells you what you're playing right on the stereo's dashboard.

Via MobileMag