I found this thread talking about UIBuilder (not sure what it is, have not searched yet if someone could elaborate)
http://eqiiforums.station.sony.com/e...ge+sound#M1032
They mention dropping wav files as replacement sounds. Looks interesting.
----Update-----
hehehe, Doh, I guess UI builder is what this site is all about.. I read the faq, hehehehe.
Again I say DOH!