A quick search didn't turn up anything, so here goes... Currently if I want to do 1.5 min rounds, I have to manually cut the songs' length on my Mac, then add the songs to a playlist on iTunes in the correct order and with the silence tracks in between, then sync the playlist to my iPhone. It all works very well and is not too tedious of a process, but I would like to have more variety to more closely simulate the comp experience, where you don't know which song is coming up next and it may not be one of your favorites. Also, if I want to build up stamina by gradually increasing song length, I would have to re-cut my rounds all over again. Ideally I'd like an app that randomly picks a song from 5 different genres or playlists, arranges them in correct order, cuts the songs to a specified length and inserts breaks of a specified length in between. The search of something similar in the app store only turned up a DJ-type app where you have to choose the songs yourself, but it does the rest. Problem is, it freezes half the time and there is no surprise as to which songs will play. So, before I set off to build my own app (or get discouraged and forever give up on the idea) - does anyone know of something like this that is already available? How do you make your rounds? Any tips for making this process faster/easier?