Captcha with audio? Possible?

Hi, I've got a nice implementation going on SharePoint Foundation 2013, slowly building the user base. Is it possible to have the Captcha with audio? If not can I delete the captcha? I'm not sure how. Can you point me in the direction? Thanks.
The next version of the FBA Pack will use a standard captcha. In the meantime, there's an option to disable the captcha in the web part properties.
Thank you. I missed it the first time. For others uncheck Behavior > Captcha Validation.