I am looking for a third party program...

[kannesss]

I am becoming more and more interested in mashups. If you don't know what I mean, a mashup is a collaboration of multiple songs together, to make a cool sounding song. If you want an amazing example of what I mean, Go on Youtube, and look up " Girl Talk". I know he uses a PC, but I am wondering if there happens to be a program, that would be just as good for macs, that I could create my own with?
Any help, Thank you.
<3

 

[Yakuza]

Premiere?!

I guess any movie editing program should do it.

I dindn't saw the video because i'm at work and the site is blocked lol, will see it at home, but it's basicaly cut various parts of videos, ain't it?