Problem regarding .sfz files/Cakewalk sfz player in LMMS?

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Hello, I was not sure if anyone could help me out regarding this issue, but I had a similar issue in the past and forgot how I managed to fix it, so I decided to ask here for any advice/help.

I cannot seem to get my rgc:audio VST plugin to play .sfz files right - everything behaves as it would when an instrument is set-up (green lights for notes pressed on song-editor, for one), but I have no audio playing. I can play .sf2 files just fine with rgc, and with that in mind it seems VST's function just fine. I feel as though there is an obvious step I'm missing here.

My process so far has been a matter of either just opening up the sfz.dll file in LMMS or manually opening it from a file search in VeSTige. Then I go to the file search for the rgc:audio menu and select my sfz/sf2 soundfont.

Any ideas of what I may be doing wrong, or something else? Thank you in advance.

EDIT - Also, it appears that Cakewalk's free sfz player has been removed - I seem to have an older version of Cakewalk (1.96) and wanted to try updating to the latest version, but I don't think that's happening after some searching...
Now i do not know this rgc:audio VST plugin, so the specifics of how it loads sfx-files, i cant say, but you will have no success in dragging sfx-files directly into lmms. Currently lmms does not support sfx in sf2-player
https://lmms.io/wiki/index.php?title=SF2_Player
Only sf2 is natively supported.
What i think you need to do is to study the rgc interfase and find how that VST-plugin loads sfx-files, because it is not really related to lmms-functionality.