WD TV Live freezes after adjusting audio sync

I have been trying to watch an AVI movie streamed from my computer and the audio sync is out.  I adjust it using the options button, but I cannot exit the adjustment function.  The adjustment screen stays on top of my movie and all the control buttons become inoperative.  I reboot the device, go through it again and get the same result.  I have used this adjustment function before.  Sometimes it works but I have also had this freeze happen before.  Is this an inherent fault or am I doing something wrong?  I have the latest firmware installed and my moview usually stream flawlessly.

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