YouTube to mp3 is what I do, bit tedious but worth it. I also occasionally torrent whole albums or playlists from kat.cr
Never do this.
Try using what.cd. Fairly """exclusive""" torrent site; can only really get in by interview as invites are fairly hard to come by. They have just about everything, though.
You can use this website to prepare for the interview: https://opentrackers.org/whatinterviewprep.com/
Don't be intimidated. The questions are easy enough, you just can't be a complete retard. You just study a bit, connect to their irc, and answer their questions.
Some sample questions are like, "Which of these is not allowed? FLAC, MP3, AC3, WAV, DTS," and, "Can you convert from a higher lossy bitrate to a lower lossy bitrate?" Really simple.