Kirvin might have removed Cyberon from his rom assuming that users would load MSVC. Anyway, I looked through the FTP and found an option for you:
Cyberon Voice Command 2.0 (I have not tested this, and cannot vouch for its effect on your device.)
ftp://ppcgeeks:ezupload@up.ppcgeeks....ll-devices.zip
Also, clicking "Search" at the top, entering "Cyberon" as the search term, selecting "Apache" as the forum to search, and choosing "Display as Posts" yields this, 26 posts down:
http://www.ppcgeeks.com/get-cyberon-...t,cyberon.html
Hope that helps.
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One ROM to rule them all,
One ROM to find them.
One ROM to bring them all,
And in the kitchen, bind them.