Yes, I do the same thing.. 1TB..I know people that have over 1TB of music... They download the whole discography and no just the song they liked in the first place. Legal no...
I have lots of Phish live concerts with lots of songs that are over 20 minutes long. I have over 12,000 songs on itunes right now. I can take a screen shot or something if you want proof.
Alright the 20 minute long crud is probably most of it.
12,000 songs is not even 100GBs though; given that most of the songs are about three to six minutes. 8,000 is just barely 50GBs.