How to decompress a compressed SoundFont
Generally, SoundFont tends to be heavy, so it may be compressed by dedicated software.
In this article, I will show you how to decompress such files.
How to decompress for .sfpack files
The .sfpack file is compressed by SFPack.
Personal Copy Soundfonts
Realistic high quality soundfonts for the soundblaster live, soundblaster live value, and similar sound cards that use sf2 format soundfonts. Tips for soundblaster live installation in Windows 2000.
You can dounload the software from site above and decompress the compressed file.
How to decompress for .sfArk files
A .sfArk file is compressed by software called sfArk, but the official website of the software is closed.
It seems that Awave Studio software supports decompression and you can use it.
If you do not mind to use command line tools, you can choose to use it.
GitHub - raboof/sfarkxtc: Basic sfArk decompressor
Basic sfArk decompressor. Contribute to raboof/sfarkxtc development by creating an account on GitHub.
If you absolutely need the original software file, I think it is safe to download it from the Internet Archive.
How to decompress for .zip / .lzh / .rar files
These can be decompressed with general compression / decompression software.
There is also a lot of free software. I use 7-Zip.