First, let me say thanks for making a great player that does hardware acceleration without thinking. I tried for hours to get MPC-HD to work, without success.
You may wish to consider keyboard mapping as a feature for the Pro version. The reason I am interested in Splash is to use as an external play to XBMC for AVC h264 files. Yours works perfectly without stuttering for me and believe me, the whole XBMC community will know.
One item that is important to use in XBMC is to be able to use a remote. Using eventghost, one can make the keys of the remote send keyboard strokes to the computer. XBMC has a full feature set and a standard set of controls that have been keyboard mapped. One would want to be able to use the same buttons on the remote for XBMC as well as when you call Splash as the external player for h264 files. So keyboard mapping would be useful.
Also, starting in full screen would be nice.
Thanks again for a great product.