I've looked in StarDat and BrooDat mpq's and can't find the music you listen to in-game for terran zerg and toss, Can anyone tell me where to look to extract these? Or possibly a /find command for WinMPQ to make looking a little easier if I went past it?

It's on the install.exe on your CD.
If you are using the 1.15.1's noCD feature, the music is in your StarCraft.mpq / BroodWar.mpq.

I changed the music of SC in one of my mods. If I recall correctly, my file list did not list the music for each race.

If you wish to find the files to change the in-game music for one of your mods, try making a folder named music and insert the sound files with names such as zerg1, zerg2, terran1, etc. until you hit the number 4 of each, I think. I just guessed that out since, to the current date, I believe those files in the MPQ directory are listed as unknowns Or, Ahli could be right and then for some reason music changes when I insert those files in a MPQ under music

You can download my (one and only) mod, Dark Evolution, from the ML DB if you wish to see detailed information, as I see to have deleted that mod of mine from my PC.

There are only two unknowns in install.exe for Starcraft and Broodwar, and they are either setup files or unused files, not game files.

See http://vgce.googlecode.com/svn/trunk/docs/Blizzard/Starcraft/misc.txt for a list of music and their internal IDs.