Nice. There is a pretty sweet tracker for the DS (I can't think of the name right now) that ran .xm music files, which was pretty cool. Since I'm currently lacking a midi device, most input-based trackers aren't working that well for me, but I also have a certain nostalgia for FT2.
For music dev, I'm currently running LMMS, which I like because it's easy to swap projects between my workstation and my DS (they both run .xm files). LMMS has a whole bunch of sweet plug-ins, too, and through the VSTi engine, I can even import closed-source plugins and generators, which pretty much eliminates my need for Fruity Loops. I was also running Fruity's vsti plugin through Finale at one point, but it was a big memory-hungry mess. I really should just get my midi server up and running, so I can use my DS as a midi input device for a tracker. Once I figure out how to work past my authentication issues with Ni-Fi and our school's Bluesocket server app, I should be able to remotely control either instruments or filters, and just run a loop on my PC. Yay!
Sweet video, by the way. It makes me think of my 486.