Yeah, Aria's music is fine, but the official OST is awful. In regard to beingthehero's comment, had I still my old boombox (the one that strangely recorded audio through the speakers—not sure it was intended to do that), I'll bet I could record the sound test from my GBA onto a cassette tape and it'd still sound better than Konami's release. I used to do that with SNES games (until we had a stereo which all the audio went through which I could tape with) and the quality was all right.
Not sure how that one got past quality control.