Hi,
Wierd issue. A friend and I have together installed DDO on a total of 5 computers, running both W7 and XP. Sound is normal until one plugs in a USB headset/mic. Even if the output is selected as headphones in windows, the sound still comes out the computer speakers. The only way around this is to actually disable the onboard sound card in the device manger... then DDO uses the headphones.
All other programs use the headset or speakers based on sound settings, but DDO only uses onboard stuff unless it's forced to do something else. Is this a known bug, or are we just having really wierd luck?