Even though the files appear to be in the right place it sounds like you are not hearing my mod. Are you sure you have UltraPack 3 enabled in JSGME and have also selected "UltraPack" in the Selector Switch?
You can't replace the stock sounds as they are loaded from an sfs archive on game start. What you can do though is open the .rc file (using Notepad) located in "IL-2 Sturmovik 1946\#UP#\STD" and scroll all the way down to the bottom of the file. Find the following entries and place a "#" in front of each one:
@sfs MOUNT fb_sound.sfs
@sfs MOUNT fb_sound01.sfs
@sfs MOUNT fb_sound02.sfs
@sfs MOUNT fb_sound03.sfs
@sfs MOUNT fb_sound04.sfs
@sfs MOUNT fb_sound05.sfs
@sfs MOUNT fb_sound06.sfs
@sfs MOUNT up_sounds.sfs
@sfs MOUNT up_sounds02.sfs
@sfs MOUNT up_sounds03.sfs
@sfs MOUNT up_sounds04.sfs
For example, the first entry will look like this: #@sfs MOUNT fb_sound.sfs
What this will do is disable both the stock game sounds and the UltraPack sounds. Do this for each entry listed above and save the file. Then start up UltraPack and test a couple of different planes. If my mod is running you should hear the modded sounds (they are quite distinct from the stock sounds!). If you hear nothing at all then my mod is not installed correctly.
To reenable the stock sounds just remove the "#" and save the file.
This should give me some idea of what is going on.
Interestingly i don't have "IL-2 Sturmovik 1946\#UP#\STD"... i have rc not rc 2,3 or 4. I am downloading UP 3 rc4 at the moment, hopefully that may solve the problem...
I'll message back and see how it goes, i really hope i can install it over my current version
ill make a back up just in case. Thank you for all of your help so far! Its great having this support
Its updated to rc 4 but to no avail
im still stuck and i dont even have that directory you said, the "IL-2 Sturmovik 1946\#UP#\STD".... i guess that means im missing something