No audio on Linux

GMEXT-FMOD functions print out `Invalid fmod type, type not compatible with extension call.` when used.

`fmod_debug_initialize()` returns error code 68: `A command issued was not supported by this object.  Possibly a plugin without certain callbacks specified.`
`fmod_system_create()` works normally, no errors.

Tested on Ubuntu 23.10 and Arch Linux with VM AppImage export.