This makes SpamSieve play a sound when new good messages are received. To add a sound to the menu, copy the sound file to the Sounds folder in your Library folder. SpamSieve will also look for sounds that are built into your installed e-mail programs.
Note: In order to play classic Mac OS X sounds (including sounds from Microsoft Entourage sound set files), SpamSieve must be running as a 32-bit application. You can set this by selecting SpamSieve in the Finder and choosing File ‣ Get Info.