Tunetrack would be good to know, as they use proprietary sound formats for copy protection purposes.
Anyway, this is something I really, really want, but I'm slightly afraid that if we all go and do this for them there will be less insentive from 2Box to make the sample editor that will make this all a piece of cake. It's a lot of work, anyway, especially when you consider how much different room ambiances changes the sound of each drum set.