I believe this will work and may help with the audio. You do not need the registry hack using it. I would be interested to see if the audio error stops:

In Windows XP SP3, Windows Vista or Windows 7, run %systemroot%\system32\mstsc.exe /admin

Or if you are using Windows XP < SP3 the command is:%systemroot%\system32\mstsc.exe /console

This instructs the Remote Desktop Connection client software to connect to the first session (session zero) for administrating the Windows Home Server. In the Remote Desktop Connection client software you would specify the name of your Windows Home Server, for example “hpserver”. Next, click on Local Resources and ensure the Remote audio playback is set to the “Play on remote computer” option.

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