Now that's a good question! Soundcard driver is the most likely problem. My Echo cards are currently a no-go, but my Delta 1010 from the previous millennium have drivers. I'm setting one up here soon, but it will be on a separate removable disk. As I'm using Sonar I'm covered in that area as it's delivered as both 32-bit and native 64-bit since 5.0. They also have a technique to bridge the gap between 32-bit plugins and the 64-bit world that is supposed to allow you to use 32-bit plugins in the native 64-bit version. Does it work as advertised? No idea! What happens when you plug that Syncrosoft dongle into the system...only God knows! [:)] It's not my main production system we're talking about here of course but rather a development system.
/Mattias
/Mattias