I'm amazed you still have the old files. I was late for Napster but I downloaded loads of individual files from kazaa/limewire/frostwire and used them to burn CDs.

Only a few years later though I would get into torrenting and replace pretty much all those shitty old low bitrate files with 320kbps mp3 discographies.

Many years later after college when I finally had a little extra money I started buying all my favorite CDs I discovered from the previous meana and ripped them myself to ~1000 kbps FLAC and meticulously tagged and organized them into my current music collection.

CDs are unfortunately getting harder and harder to find and I've only very recently started torrenting a little again, and I prefer everything be FLAC but if it's not available I still do have some 320kbps mp3 left in the collection.