Here is a page with a link to a directory from which I just got 3 sfz players. one DLL and EXE. Now, one of these is called sfz197. In a later post a person mentions that the Cakewalk unit was the sfz 1.9.7 which last version I saw was the rgaudio sfz player. This was in fact a downgraded version since, at the time, the full version was a paid version from Cakewalk. The Full version had a gorgeous GUI with lots of fader controls and could support unlimited layering. the rgaudio could support 2 layers and had not much of a GUI at all
This is an old program so whether it will work today, I do not know, but here's the link to the forum that will get you the link to the directory I just downoaded from
http://forum.cakewalk.com/Free-SFZ-Player-Where-is-it-m1724080.aspx