Every time a new version of the open-source "Mixxx" DJ software [mixxx.org] is released, I download a copy and give it a go. I've no real need for DJ software so I always uninstall it soon afterwards, but I like to keep track of it's ongoing developments.
The video above is me wanking about. They say you can judge how good a piece of audio software is by how well it's pitch shifting sounds. I don't know about that, but extreme pitch shifting is all this video really is, with a few attempts at finding something interesting thrown in (e.g. 2 minutes in). Due to inevitable copyright infringement claims, I ommited anything of musical value from this video, with just a hint at the end, of what else I got up to.
Mixxx is a valiant piece of free audio software, I admire what all-involved are trying to achieve. This version has added a whole bunch of features that Mixxx was in desperate need of. I think if you are really into it you can get a lot out of it, I'm just not sure if it yet comes close to the robustness and depth found with some commercial programs, but then again, I'm not a DJ.
Created in Processing [processing.org] using the same image as source. First posted on Google+ [plus.google.com]. I must get around to finishing what I had in mind for this process. Too many ideas, not enough focus.
I was halfway through making this when I suspected it was done before, by someone already. After Googling, I found it was. It's a concept done to death, in fact. So I pretty much abandoned it as it was, save for a little toning. I did make it a bit different than others though by cutting a slot in the visor to suit the cats nose (not all that noticeable in this low-res version).