I use Napster/Rhapsody and make my own playlists and they are saved forever. Great when you are teaching 12 classes a week. The songs sometimes become unavailable so the play lists need to be refreshed from time to time. I have playlists for all: spinning, Bootcamp, HIIT, Footwork, PT, stretch, yoga, Pilates, Aqua and my own workouts etc. Only costs 9.99 per month or less and I consider that a bargain rather than paying for each song.
I just made 25 55minute bootcamp playlists with a cooldown song at the end public for you. k/kimfit is my username there.
Good Luck and Have fun!