I am making api like recaptcha i have done all module.And now i am making module for sound of captcha.If user will click on sound icon button than captcha answer will sound (like recaptcha concept). How will i do this ? any idea ? Is this done in javascript ?
Javascript or flash. Can be done in various ways (jquery for example). However if it actually is similar to recaptcha I imagine that you will do heavy security measures to it.