In case you're wondering if I've dropped out of the iPhone world, I didn't. I do a lot of work in the mobile world, so I have a lot of different devices, including a BlackBerry Pearl 8100. The built-in ring tones aren't exactly the type of thing you'd want to listen to more than once, so having a BlackBerry ringtone editor that runs on a Mac is a good thing.
I have just one gripe about RIngtone Studio; it's a single-function application, and the price tag -- US$29.95 -- is really quite high for something that just creates ringtones. PocketMac defends the price by noting that many BlackBerry users get into subscription ringtone plans that can cost as much as US$9.99 every month.
Firing up Ringtone Studio displays a unique user interface that looks like the outline of a BlackBerry (see below). To start creating a ringtone, you drag a sound, video, or iTunes file and drop it onto the mock BlackBerry. Within a few moments, the file is transferred to the application and you see a visual representation of the sound on the mock screen. Trim a portion of the sound (up to 40 seconds long), and optionally have the application fade the music in at the beginning of the ring and out at the end, and when it sounds good, click the Create button.
All in all, the application does exactly what it's supposed to do, and it does it easily and quickly. For anyone who doesn't have the patience to create their own ringtones using iTunes and GarageBand, it's a perfect program.