I have a CD and tape player in my workout area. There’s no one around so I listen to pretty much anything I want. Since a typical CD runs about half an hour I use it to time my workout. My old coach used to say, “If your workout takes longer than half an hour you’re probably spending too much time sitting on the bench with your tongue hanging out!”

Today I listened to Beau Soleil’s “Gitane Cajun,” I can only understand about one word in four of their Cajun French, but their music is good.

Yesterday it was Bix Beiderbecke, “Jazz Me Blues,” recorded with the Wolverines in 1924. Bix was the greatest tenor horn (cornet) player of all times, but unfortunately fell down the neck of a whiskey bottle and drowned in 1931.

The day before was a reading of D.T. Suzuki’s “Zen and the Samurai,” exploring Zen Buddhism as it applies to the life and training of a Japanese warrior.

Not sure how this would be if you work out in a community gym. Probably be a good idea to use ear-buds if your musical tastes tend toward bagpipes or the “Grand March of the French Foreign Legion.”

I've got an old computer with copies of all my music where I train, so I can listen to pretty much anything I own. I tend more towards rock & metal, so maybe some AC/DC or similar. Last workout I listened to the band Black label society (album for the session was 'Mafia') - I suppose the nearest definition of them would be 'sleaze rock'. The guitarist/singer is Ozzy Osbournes old guitarist Zakk Wylde - as a side note years ago I saw black label society & Ozzy at the old Monsters of Rock festival many, many years ago (Zakk is top 10 coolest guitarists in the world ever for sure!)
Here's a couple of tracks from the album so you can get an idea:

Cool.
What ever keeps you hoisting iron.

I write my own music.
http://www.soundclick.com/bands/default.cfm?bandID=725173
Recently I'm trying to listen to music that doesn't use the 12 tone western equal temperament scale. (Also writing such music.)
Otherwise I like industrial music best but also standard classical is OK along with 80's pop/electronica, etc.

Basically the three of us have different tastes in music.

I accepted long ago that my music taste isn't very good ... I went to see whitesnake

Another vote for the harder type of rock and some rock not so hard (Grateful Dead) but I'm wide open on music. I bought an ipod from a friend who buys and resells a lot of electronic gadgets to help him out and it already had a wide selection of music on it which makes me think the ipod might have been a part of some sort of commercial promotion a few years ago but a lot of it is okay.