Where can i get a free maltimedia audio controller driver

if this is your system then max driver are for xp only http://www.dell.com/support/drivers/us/en/04/Product/la...

The Latitude D610 is from 2005 IIRC. Sorry to say this, but I don't think that you'll find Windows 7 drivers for all of the hardware in a laptop that old. If Dell doesn't have any, then your next best chance is to check with the audio controller's manufacturer's website, but I wouldn't get my hopes up.