Hm, that is strange. It seems you do not have Adobe Flash installed. You go and get that so that you can listen to this file.
Simon Flavelle: DJ
The last "battle" in each game, brought together! Though the final level in Blast Corps involves you demolishing buildings in order to allow a space shuttle to land. (This has everything to do with Cave Story, obviously!)
A fast-paced, stressful mashup, as it should be.