Post Bootcamp 3.1, Windows 7 muted on startup

Hi all,
So I'm ecstatic that there's finally a working Cirrus Audio driver for Windows 7 thanks to the recent Bootcamp 3.1 update, but now I've got a new (though admittedly minor) problem: whenever I boot my computer into Windows, the sound is muted on startup. Toggling it back on is as simple as hitting one of the volume buttons, but I'd prefer to have it not muted so I can hear the startup sound.
Thoughts? Suggestions?

Originally my Cirrus sound had issues in Windows 7 in that the speakers were weak and a red glow constantly emitted form the audio jack. This was remedied by installing a driver update from Cirrus(6.6001.1.13) long before Bootcamp 3.1 was released. This stopped the red glow and made the speaker perform perfectly. As part of Bootcamp 3.1, the Cirrus driver were updated to 6.6001.1.21 and although the audio still performs well, the windows startup sound does not play thru the speakers (only thru the phone jack or my USB headset). Just for fun I rolled back the Cirrus driver to version 6.6001.1.13 and the Windows startup sound now plays thru the speakers as before.

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