If the file is specifically for audio, it will contain .mp3 or .flac files of the game's score by Jeremy Soule.
Most often, a .zip file with this name contains community-created content. The internal structure should include: File: Star Wars - KotOR.zip ...
If the file size is small (a few MBs), it likely contains player progress. You would see folders named 000001 - QuickSave containing .sav and .rim files. If the file is specifically for audio, it will contain