QT streaming .mov plays back video fine, but sound choppy with static

I created some QT streaming files with compressor. 6 bandwidths for same video file. The files themselves play fine. When I click the QT ref movie I made the sound is poppy and has some static. You can view the video here.
http://services.ltc.arizona.edu/MediaServices/betts/betts6.mov
The problem does happen on more than one workstation, but the files on the server play fine. It's just when streaming. Any thoughts?

Yep. Pretty horrible.
Why not use some more modern codecs? Currently you're using Sorenson 3 and IMA 4:1 audio, Stereo and at 44.100Hz. No need for stereo in a "talking head" video. No need for an audio track that is only 4 times smaller than the audio found on a CD (4:1 compression).
Use MPEG-4 Video codec and AAC audio. This will shrink the data rate and probably fix your audio issues,

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