That's quite wierd. I'm not sure how you could fix the problem, but I do have an idea about how to get around it if nothing works. Use headphones, that way, even if the sound is low without them, it should be at an acceptible volume with the amplification of the headphones. Sorry I don't have any ideas for fixing this, but I hope the headphones can help.
By the way, I just noticed that windows had this pop up when the game crashed:
Problem Signature:
Problem Event Name: APPCRASH
Application Name: swkotor2.exe
Application Version: 2.2.0.0
Application Timestamp: 4226a88a
Fault Madule Name: msvcrt.dll
Fault Module Version: 7.0.9200.16384
Fault Module Timestamp: 5010ae12
Exception Code: c0000005
Exception Offest: 0000981d
OS Version: 6.2.9200.2.0.0.256.48
Local ID: 1033
Additional Information 1: 901b
Additional Information 2: 901bf7c59ba806c258a0993ae191690d
Additional Information 3: ead5
Additional Information 4: ead5d8df11b1c39382787069fa7aaf18
Please help. I run Windows 8 on my Mac via Parallels (sorry, I can't get any more specific) and my KOTOR 2 game (from the KOTOR Collection) quits by itself whenever I get about halfway down the hallway to where the main character is. Is there anything that can be done to fix this?