Vista - no audio

lost! I have downloaded vista twice. the first time I had to download audio
drivers. No problem except for the sound on ff IV. Souned as if it was
chewing gum, but the second download, clean install, the program will not
allow the drivers for audio to be installed. After six tries and repeated
error messages I am going to bed. I really like vista's set-up and looks and
I understand that this is a beta, but even a beta should'nt have these types
of problems. I am quite happy with vista but someone please assist me with
this issue.
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ajabell