If not, let me introduce you: 8tracks is a site where users can listen to user-created playlists (mixes) from people all over the world. You can even make your own! It's completely legal and the possibilities are endless -- you can upload whatever music you want from your own collection or search for music on Soundcloud to include in your mixes. There are soundtracks based on tv shows, movies, moods, genres, years -- pretty much everything you could ever imagine. And it is rad.
Here's a mix I made of just some of my favorite songs lately. Some serious quality jams.
And another one I made for 2008-2009 because those years give me some major fee-fee's (senior year of high school, what up, class of '09!!!)
If you're at all interested you can see some of the other mixes I've made here. Feel free to add me if you have an account (or if you decide to make an account!) I am, seriously, so obsessed.
Do you have an 8tracks account? Do you have any favorite mixes? Please share in the comments -- I am ALWAYS looking for new, great music to give a listen to at work!