Basically, I know what it is obviously you put the two CDs in your turntable (unless u have vinyl) connect it to the box then laptop then just drag mp3 on the computer n boom. Couple questions though, 1. Can you use programs like Virtual DJ or does it just have its own program your only allowed to use and if you can use multiple programs which one is the best? 2. For most DJ programs, the BPM is read and when you drag a song, it automatically matches the BPM, or theres a one-click feature for that, do the DJ Programs that are compatible with the Serato Scratch live have that feature? and 3. Stupid question not expecting to get a solid answer but where’s the cheapest I could find it? So Far I’ve found it for around 500 on eBay. Thank you.