I agree with Leo. Since the song starts out pretty slow, I would add at least another minute of footage.
Right now your 36 second clip is 7.5 mb... You can easily get that down to 1.5 - 2 mb.
1) Open
http://www.dpcfilms.com/howto/ 2) Click on "Be Nice! Compress Your Videos (word .doc)"
Keep the videos coming!