until then, unless you've got a really good reason and you know exactly what you're doing, I would recommend against messing with EXT3.

If on the other hand you like to play with stuff like this and you realize that this isn't that big of a deal and you have a backup of your music on the off chance something goes really wrong (to the best of my knowledge nobody has lost any data to ext3 on the empeg) go here.

-Mike