Rdio has changed my musical listening life and this change is reflected in this, my annual year-end music mix. Rdio is a subscription based music service (a la Spotify if you have tried that). This means you pay your 10 bucks per month and you can listen to whatever music you want on your computer or phone (if you have a fancy phone).
An important caveat: not *all* music is available on Rdio, but most of what I want I have been able to find.
Yes, it requires the Internet, and yes, if you cancel your subscription all that music goes away, BUT REALLY? Do you really need to own all your music? No. And do you listen to your music mostly in a cave away from 3g service? No. Rdio allows you to try music and explore without any upfront cost. It is wonderful.
As such, I have tried much more music this year and my year end mix spans 3 collections. You can stream them all directly from this page here. (This does require an Rdio account, but just sign up for the free version if you don't have one already.) Or, if you are savvy, you can download the audio files - and playlist .xml file - and import them into your iTunes library. Enjoy.