I have been searching for the best laptop sound for years, and have had many software and hardware modules. By far, this is the best. I bought two, one for my laptop, and one to play sounds directly from my keyboard.
http://www.musiciansbuy.com/Ketron-SD2-S...2KETRONKIT.html

I found I didn't need two, and am willing to sell one at a good price. Email me if interested.

Bernie