Capsule takes a list of tracks and optimizes the song transitions by reordering them and applying automatic beat matching and cross fading to give you a seamless playlist. It is really neat stuff. Here’s an example of a capsule between two Bob Marley songs:
It makes a nice little Bob Marley medley.
Jason writes about Capsule and Earworm and some other new features in remix in his new (and rather awesome) blog: Running With Data – Earworm and Capsule. Check it out.