Have you allocated enough memory to Peak? Allocate additional RAM to Peak if possible, using the Finder's Get Info command. To do this, select Peak's icon in the Finder, choose Get Info from the Finder's Special menu, and enter the desired amount in the Preferred Size field. Make sure you allocate more RAM than the amount indicated in the Minimum Size field!)
Always leave about 300-500K free for the Sound Manager to allocate sound channels, and for libraries to link. This means that you should set Peak's application RAM in the Get Info window from the Finder to approximately 500K less than the total free RAM reported in the "About This Macintosh" window in the Finder's Apple menu. For instance, if your Macintosh has 8 MB free in the "About This Macintosh" Dialog, you can set Peak's application RAM up to 7.7 MB in Peak's "Get Info..." window from the Finder.