The hardware being used to develop the program isn't very snazzy, but it's definitely oriented more toward sound than video. It all forms a tidy little auiPile of equipment that's easy to find in the dark. It's all available from online stores, and you'll most likely need a few audio cables and adaptors.

A regular Macintosh system (iMac, MacBook, Mac Pro, etc.) will work too, but they pay way too much attention to their pictures.

Aside from the computer having to be an Intel Macintosh and the Operating System having to be OS X Leopard, the following are just suggestions. This is a description of the hardware I'm using in the development system, but many other components will work as well, some probably better.