I raved about this software utility about a year ago on how it can dramatically improve the sound experience on any Windows PC. I run a decent set of Creative speakers connected to my Qosmio laptop in my office and the sound quality improvement after installing Bongiovi DPS is like night and day. If you are looking for improvement in the sound quality of your music or movies you will be blown away by this little plug-in.........and its being offered for free until the end of the year.
Bongiovi Acoustics website http://bongioviacoustics.com/
Enjoy.......You will not be disappointed