The MX-850 uses the same software as my
MX-700 . I'd suggest getting the software installed even if the remote hasn't arrived yet, downloading some sample files from other sources (my
remote files page has an assortment of stuff in it, my review includes a copy of
my overall system file , and Remote Central has a ton of system and device files), and playing around a bit. The software takes a little getting used to (I think I touch on that a bit in my review), but once you get the basics under control you'll find that it's surprisingly powerful.