I just bought a m-audio oxygen 49 keyboard to use with Reason. Basically it worked last night, plugged into the USB port, but when i went to use it today it didnt work. I can only choose from USB-AudioDevice or MPU-401 (which I know isnt the right one). Anyways, so I have to click that its attached to the USB-Audio Device, but everytime I do it says "The MIDI port may be in use by another application". I appreciate any help. Thanxz