We loved the original Pacemaker, and were sad to hear of its eventual discontinuation. News just in this morning, however, is that the DJ tool is back as a PlayBook app thanks to an exclusive collaboration with the tablet's maker. Details are sparse right now, as the information spilled at RIM's event this morning at MWC, but we do know that there will be auto beatmatching, vinyl mode with scratching, digital mode, looping, loop travel, pitch control, beat skip and "pro level" effects. All we have in terms of availability is that it will be out this spring, with no word on price. In the meantime we're going to start prepping up that music collection.