I built a new computer in January to be used for 3D, HD and DAW work. It is running Windows 7-64 and I upgraded to Sonar 8.5 64-bit edition. I then purchased GPO4 and installed it for 64-bit operation. When I play the Garritan sounds through the panel that pops up to act as a VST plugin, the sounds are good. But when I play the sounds in the standalone program, there is obviously something wrong. I do hear sound but it is like the sound is garbled. Does anyone have any similar experience? I am not in urgent need to fix it because I need GPO4 mostly as a software synth for producing sound from Sonar. However, I would like to get it fixed if only to make it easier to explore all the sounds in the collection.