Caustic Beat used for Youtube Video http://www.youtube.com/watch?feature=player_detailpage&v=IopPN4Iy0fs
Hmmm, I watched the video, but I fail to see how the Caustic App relates to the project you showed us there... ???
If you press 'show more', I think the song was created using the PC version of Caustic. Caustic was running on a Windows emulator (WINE) on a Linux box. It was then augmented and mixed as per the tip presented.
O I see, sry, I seem to have missed that little detail.... huh, cool...