Are mashups still cool? I’m probably very ill-equipped to actually answer that question, but the folks behind the Austin City Limits Music Festival have dropped one called Car Stereo (Wars) via their MySpace page, which according to rumors drops numerous hints to who will be playing this year’s festival. Give it a listen and see what you can decipher and read on after to the jump to what the kidz have figured out…

According to the ACL Message Boards, here’s who can be heard:

Okkervil River, Man Man, Silversun Pickups, CSS, N.E.R.D., Gnarls Barkley, The Raconteurs, MGMT, Jamie Lidell, Eli Reed, Neko Case, Kate Nash, Hot Chip, The Octopus Project, Del the Funky Homosapien, Heartless Bastards, Robert Earl Keen, Sharon Jones & The Dap Kings, Tegan & Sara, Ingrid Michaelson, and Black Joe Lewis

The ACL Fest is happening from September 26th - 28th, the full lineup will be officially revealed on April 15.