I use a Mac for everything except my calling gigs. Unfortunately, I’m too addicted to Vic Ceder’s square dance calling program, CSDS, to attempt a move to using my PowerBook for calling. However, I would consider a switch if this rumor is true:

There’s a rumor afoot that Apple may even be developing a new professional version of the iPod, which will allow DJs to change the pitch and speed of the tracks.

It’s from an article in the New York Post about how dj’s are starting to use iPods.