Hi, I just switched from PC to Mac. On my PC I used Acid Pro a lot. I searched a lot on forums, read a lot of topics with people looking for an equivalent program to Acid Pro on Mac, and I understood that doesn't exist. Though on Acid I only used a few features, and particularly the beatmapper wizzard. I used it to mix tracks (electro) together. For example I start a project at 130 bpm. I open tracks in this project and the beatmapper wizzard determinate their bpm, and once it's done, the program automaticaly set them to 130 bpm. Like this I can mix easily my tracks together. I'm from Switzerland, I'm not sure about my english, mostly when it comes to explaining technical things, so here is a link to a screenshot i took when using Acid, it may help to understand what I'm saying. Plus, I really liked the interface of Acid, so it may also help for advices... http://www.fileden.com/files/2007/1/18/658524/screenshot.jpg That was pretty much the only things I used on Acid. After reading topics on this subject, I can tell Abelton Live can probably do this, but I'm not 100% sure, and as Abelton is kind of expensive, I don't want to do a mistake. Plus, if there are some cheaper programs that can do that kind of operations, I'd be interested to learn about them. Thank you for your time!