[Hogg]

Let us not forget the actor Vincent Gallo. A man of strong audio (and artistic) convictions.

Surely you jest Occam.  Mr Gallo may have strong convictions but his execution is pretty bad IMHO.

                                                             Jim

[Bwanagreg]

One audiophile musician of note is Tony Levin, bass player for Peter Gabriel, King Crimson, etc. He did an interview a few years back highlighting his gear - all Linn stuff (see link at bottom).

http://www.tonylevin.com/tl_links.html

[earlmarc]

R&B star, R. Kelly has several expensive high-end systems. Top-of-line Meridian system is his HT.

[Freejazz]

... another that comes to mind.  A Naim-guy. having purchased his gear from the wonderful recording engineer (primarily known for his recordings for Naim), Ken Christianson, also part-owner of Pro Musica in Chicago.  

There was a write-up or two in Stereophile about Charlie's music, his introduction into high-end by Ken and the recordings they had done together.

*I was lucky enough to have Ken as our primary recording engineer for a series we did in the late 90s at Frank Lloyd Wright's Unity Temple in suburban Chicago.  Amazingly pure and life-like recordings ... also a very nice guy and passionate lover of music.