rodrigoalonso: Yes, but it has neither the color fix nor the OGG music patches.
GOG staff, please add the patched versions (and links) to the original game as well.
The CC expansion makes computer controlled players play erratically during Original Battlegrounds campaigns (for some time, I even thought it was a GOG bug but was able to confirm the issue with the CD version). Almost all AI issues in the forum (Darth Vader campaign, Trade Federation, etc) are caused by this.
EDIT: the original SWGB can play music if you make a copy of win32.dll (in the game folder) and rename it to winmm.dll. I don't get why GOG has renamed the fix (from ogg-winmm, I guess) to win32.dll considering they had to patch SWGB:CC to use it.
Is this still an issue? I would like to play the original campaign without AI bugs and color glitch AND with music.
EDIT: ok, I payed more attention to what you wrote. I renamed the win32.dll to winmm.dll and was able to successfully run Battlegrounds.exe and play the original campaign with music. Now to see if I can play the original campaign with the widescreen patch...