CAn Arduino communicate over midi connection?

No idea what this thing does but there is a "reprogramming header" that looks like a standard in-circuit proogramming header. I would assume that it's got some code in the atmega which you would have to integrate with. Do you have the source and the means to modify/recompile it?

If it's open source maybe you can find find the author or a project team to ask through the ladyada site.