We've received several reports from Mac OSX users with Flip4Mac WMV installed. This is 3rd party software allows you to play Windows Media streams with Apple's QuickTime player on the new Intel Macs.
When streaming the RADIO CHANNEL with this setup, after one program finishes and a new one begins the stream may start to "stutter." We confirmed this behavior on our OSX systems using Flip4Mac.
We've submitted a trouble ticket to the Flip4Mac authors and should hear back from them soon. In the meantime, if you experience this problem, just click on the QuickTime Player "pause" button; after the stream stops, click the "play" button. The stream will resume without stuttering.
HOS Web Support