I also love Chang. I laughed so hard when that scene first started and I thought they actually killed his character. I laughed twice as hard when he then walked in. As for the song, a quick search yielded some results.
Here and here. You can probably use a program or browser add-on to download them. Hope that helped.
Message Posted On Tuesday, November 23rd 2010 at 1:25 pm
Warning: Community season 1 episode 13 guide may contain spoilers