Used Frostwire on our Desktop. Since I got my laptop I've pretty much used Vuze + BTJunkie/TPB/KickAssTorrents/isoHunt to download music and TV Shows/films. Every now & then I'll use Zamzar to convert & download stuff from YouTube aswell.
However, I've started buying CDs alot more...so far this year I've bought Foo Fighters, Funeral Party, Little Comets, Miles Kane, Mona, Friendly Fires, The Naked and Famous & Kasabian's album boxset; so that's already a record for me and they'll be more with Coldplay, Paramore (possibly), Kasabian's 4th album, etc. to come.
Also started using Last FM more often over the past 2/3 months.