I don't see how it's going to get done unless they do it.

Well, okay, it could get done by people other than the empeg guys if (a) the player app gets opensourced, or (b) someone writes a replacement player app, builder image, and upgrader.

Why would any of that need to happen? The filesystem is totally on OS level thing and the empeg software shouldn't care about it at all. Users could run a jfs on the music partitions and leave everything else alone. That way the empeg upgrades should still work as always. After installing the empeg software the user would need to update the kernel and probably a few userland utilities (fsck, mount, etc). The process shouldn't be any harder than installing any of the current userland apps people have created. The only empeg software that shouldn't "just work" with jfs formatted music partitions is the builder utility which isn't really necessary.

-Mike