Avatar Hollywood Undead

Ok, I m back to making Amv s for Avatar the last airbender. I LOVE LOVE LOVE that show. I was introduced to this song via this one amv right here: Check out the song here: And I decided to make one for Soul Eater, Death Note, and Angel Beats, they were in the for of MKV and, Or mp4, and Sony Vegas doesn t let me input those types of files, so if you guys have any advice That d be awesome