So, after reading an article about how Nine Inch Nails had released the 'source' (loops and samples, that sort of thing: I don't know what I'm meant to call it) of their previous single in GarageBand format, and hearing one of the results in the destruct\hour, I went and found that the innards of the new single are available [registration required] not only for crazy Mac types, but for crazy Windows types too.
So I downloaded a demo of Sony ACID Pro, got the music, and started messing around with it.

That was two or three days ago, and each time I load the software it tells me in a smug way how long I have gone without actually producing anything.

I'll get back to you when there's something worth telling you about.