Topic: FF400 - The device is being used by another application
Getting this error when trying to playback audio in Win7x64. I checked the default device in Windows dialog and it is set properly, but when I hit Test I get the error message. If I play something back with Windows media player (or browser, etc), I get the message. But audio does play back ok from Reaper.
I don't have any other audio devices installed and I don't have any programs open. I was playing back audio last night with no problems. Booted up this morning and had no audio, I had made no changes since last night. I shutdown the computer and FF400 and booted up and tried again, same issue...
Running latest driver and firmware.