I have just upload a new Mac / Cocoa app I have been working on called ShortBoard. It is a simple app that loads shortwave broadcasts schedules from Prime Time Shortwave, and makes it easy to view, sort and filter them.
This is just a first release, and I am planning to continue to play around with it and add features (im using it to learn Cocoa).
You can find more information, as well as download the app from here.