I was (partly) responsible for obtaining recordings for a Very Large Online Streaming Service(tm). Sometimes the studios would send us trucks filled with CDs. Sometimes they didn't have any easily accessible copies of the albums and would tell us to just "get it however..." which often involved SoulSeek, Limewire, etc.
We were not smart about it. We just found the stuff and hit download. To the point where there were days the corp Internet was saturated from too many P2P clients running.