I did some spinning over the winter ... I gotta agree that the music can get a little loud. Actually, I don't mind the loud music, but at the YMCA where I went they apparently couldn't adjust the volume of the mic. I have trouble understanding words in ambient sound (conversations in bars, etc), so for me this means almost never actually hearing what I'm supposed to be doing. Argh!

One of the instructors managed to project her voice well enough to overcome this -- the others didn't.