Unlike an MP3, which throws away data to save space, a FLAC file keeps every single bit of the original audio.

This likely refers to the "Sok" collection or a specific uploader/community tag. "Vol4" indicates this is the fourth installment in a series.

To understand the story, you have to decode the technical shorthand used by the digital archivists who created it:

If you are looking for a or artist associated with this code, I can try to track down the exact musical work for you.