[support] Captcha with sound?

[Krister Ekstrom]

Hi,
In these times of spammers and bots and so forth i'm thinking of
implementing a Captcha module on my Drupal 5.1 site. I see there's one
available, however i have a question to those who are using it: I want
to keep spammers out but allow access to the site for the blind or
visually impaired people, so i wonder if there's a module or such to
provide sound as a representation of the numbers in the captcha system?
/Krister