Yea figured it out thanks. If anyone else is having the same error, you have to put the CD2, CD3, CD4, CD5 to the paths of the CDs in the bg2 directory as well. The sound is stuttery. What am I supposed to edit in openal.conf exactly?

Okay figured it out. You edit the alsoft.conf in /etc/openal and change the "device = default" under the alsa backend part to device = alsa.

Is it necessary to change the sample rate? Is the sample rate the same as frequency in alsoft.conf? Or how did you change it? Thanks.