This is Seth Sandler (creator of the MTmini). If you look at the rest of my blog, i've actually built a full multitouch table that utilities music based applications. Right now I have a PD patch that works with everything, but hopefully i'll have time to port things over to MAX so it'll allow basic multitouch functionality within the environment.
The current blob tracker I'm using is opensource and can be found on my blog and nuigroup.com (the place where a bunch of us are building DIY multitouch devices). I've tested the jitter blob tracking, but the current one I'm using (and future one I'm helping to work on) is proving to be much more robust.
I hope to hear from you all in the future and we can make some interesting applications using MAX =)