Online and mobile music service, Slacker, has made the jump to Android tonight. We heard about this first at CTIA, along with new twitter integration, but the app is now live in the Market. You’ll be able to stream tunes organized into expert-made or custom-built stations over the air, but also sideload higher quality versions once you’re at a computer. As usual, you’re limited to the U.S. due to licensing issues, but it’s a pain us Canadians know all too well. Slacker for Android should work fine on the new HTC Eris and Motorola droid, as well as the older HTC Magic, myTouch 3G; apps are already available for iPhone and BlackBerry. Keep an eye on Slacker’s Everywhere page for their updated mobile offerings tomorrow.