New song!?!?!

As much as i hate to admit this, but ive sort have been neglecting My Chem in the past few months. Today i was on youtube and had a suggested video for me. To my amazement it was a new mcr video. Then in the suggested side bar thing it had the whole song that was on the video! I'm pretty sure i peed my pants in excitement. When did all this happen? And where can i download that song? I can't find it on itunes.