I just noticed this today, I have been playing for about 2 hours and aside from the main menu and scripted battles; i have no music at all.

i have the volume at 1/2 and uninstalled the Widescreen mod, all i have is the slowdown fix and that is it..

After i took off the widescreen mod i had music for a little bit, then it completely stopped, and yes I am aware it does not always play.