Does anyone listen to multichannel music in their car?

Quad was mixed a little differently, and yes, sometimes you get a different feel, different instruments, and hear more stuff (aka the quad version of Floyd's DSOTM. With multichannel sound you get 3 front speakers, two rears, and a subwoofer, and with proper mixing the sound can be phenomenal. Hotel California DVD-A is so clear it's like you're in the room with them. Unfortunately, the public didn't catch on to it and DVD-A was in a war with Sony and their SACD so people were confused over what to get and the market just kinda died out.

There are some stereo-to-5.1 conversions made with certain software that sound really, really good...and some not so good, but a lot has to do with the source material. If you use MP3s for source, well it will sound like shite. The best sources are lossless from vinyl or tape. I got copies of Live at the Filmore, Animals, Bat out of Hell, Hotel California, Wish You Were Here, and DSOTM (from the Immersion box set) and the music in surround is great. If you bitorrent or do usenet you can find them.

I drive an Acura with such a setup and the discrete surround is fantastic. My home theater was once set up for it, too, but...it is no more.