How does you AD516 work out with OS3.9? I've never tried to get mine to actually work yet.  
 
 Hi Gizmo!  Just to get back to you on this, I loaded up the latest Studio 16 software and AHI drivers last night, AD516 appears to work fine under 3.9.  I played back some samples (through Studio 16), system beeps, and threw an mp3 in there with AMPlifier, too, no issues.  Now to find a list of other AHI compatible software... this kind of rocks!  
 
 PS - disregard the Katy Perry wallpaper, I'm actually listening to Boston, LOL.  :biglaugh: