My computer has ben down. Ethernet adapter went bad and I wasn't in a hurry to replace it.
Anyway...
I would enter
Z:>mount d d:\ -t cdrom (enter)
Z:>mount c c:\Games\Blood (enter)
Z:>c: (enter)
C:\games\Blood
I had the same problem you were haveing with my SB audigy but my generic onboard WDM works fine. For me the tracks don't repeat, they play once then quit playing. So I have to reload a map or wait till the next map if I want to hear the on disk music. Only a few of the on disc tracks are desirable. So really the on file music is fine. Some of it is actually better than what is on the disc.