hmm... I've checked nearly every music store I've gone to (places like Sam Goody, FYE, etc...), and I've yet to see any Ayu CD...
... the closest thing they had to Japanese was some CD of ancient Japanese songs
. I suppose if you live in places like NY or Boston, finding Ayu goods is much easier... with Konokuniya, Book-Off, etc. , going to big metro areas is your best bet
!