I've thought about trying out what AckAck is doing too. The Kingston Cloud 2's are USB, and I have a really good speaker setup for desktop PC which I don't even use right now (Klipsch pro media). Do you just set that up through the AH sound control panel AckAck, which device does what etc?
You need to set it up in Windows and AH.
In Windows (Windows 7), set your desktop speakers set to "Default Device" and your USB headset to "Default Communication Device". In AH go to Game Sounds and select your USB headset for both the microphone and headset.