Gargoyle doesn't offer (much) support for V6 games, and can't display graphics in Z-Machine games. You will need to use Windows Frotz for Beyond Zork.
For sound support, it should work if the files are in the same folder as the Lurking Horror game file and have names like SND3, SND18 etc. You can extract these from the
ifarchive blorbs with a tool like
gblorb.
You should also be able to reassemble the blorb to include the Lurking Horror story file. Extract the files using gblorb, then edit the SPEC file in a text editor. Add the first line so the complete file looks like this:
Code:
0 STORY0
3 SND3
4 SND4
6 SND6
7 SND7
8 SND8
9 SND9
10 SND10
11 SND11
12 SND12
13 SND13
15 SND15
16 SND16
17 SND17
18 SND18
Now, rename your copy of the Lurking Horror data file to STORY0. Open gblorb and load the SPEC file you edited, then type create. Save the resulting file as lurking.zblorb. If you see errors, make sure all the files (including gblorb.ulx) are in the same folder.
I've only tested this as far as creating the unified blorb file. I'm not familiar with LH and don't know how to get it to play sounds.