Outdated Sound Drivers?

i bought an alienware aurora r5 about a year ago, ive got soundmax intergrated digital HD audio, The drivers name is ADIHDaud.sys and its date is 07/18/2007, the audio drivers are crashing and screwing up games and other applications on my system, ive searched the net at least 4 times looking for upgraded, or better drivers, and i cant find any, are these the most current? or are there better ones out there?