If you want to run older M-Audio devices like the Oxygen 8 under Windows 8, their most recent drivers won’t work without some tricks.
Get Install M-Audio Legacy Keyboard 5_0_0.exe from m-audio.com/index.php?do=sup … ers&f=1086 .
Then right-click on the .exe and select “Troubleshoot compatibility” and follow its recommended path.
You should then be able to see the Keystation entry in TouchDesigner’s MIDI Mapper dialog.