People occasionally ask me about the size of my music collection. Here's how it stands as of now if you're curious:
CDs: about 650
Tracks: about 17,000
Size on disk: 214 GB
Most of those tracks are all ripped from my CD collection, though I have various free tracks, songs extracted from game files, and so on—probably a couple thousand. Everything from my CD collection is now ripped in a lossless format so that it's full CD quality, unlike MP3. I just finished re-ripping all of my CDs to that format; most of them were originally MP3s. I don't recall exactly when I began that project, but it was probably eight months or so ago.