I've been following this guide too, but it doesn't seem to cover how to map the Ouya select button (i.e. the 'O' button).
I have installed the Vendor_20a0_Product_0001.kl file, and I set up my remote control as described in the post (#6), and I added a few XBMC keyboard shortcuts for convenience. Everything works.
I used the "OK" button on my universal remote to be the enter key, so that works for selecting things within XBMC, but I can't select anything with the remote outside of XBMC.
Can anyone explain how to map the Select/O key to Flirc?