Symptom
Soundtrack cannot read files exported at a sample rate other than 44.1 kHz. When you try to open the files, the pointer turns into a progress indicator (looks like colored pinwheel) and Soundtrack stops responding.
This happens after upgrading to Mac OS X 10.3.
Solution
Update to Soundtrack 1.1. The update can be obtained via the Software Update pane in System Preferences. The update can also be found at the Soundtrack download page (
http://www.apple.com/soundtrack/download).