Thank you for the reply.
The version of Fedora doesn't matter. I remember I was unable to load Internet tracks in the previous versions as well.
I found the file
belonging to the package
Its content is
$ cat /usr/share/raydium/rayphp/repositories.list
# This file lists data (tri, tga, wav, ogg, ...) repositories.
# Listed servers must run R3S (Raydium Server Side Scripts) files.
# you can only use http and https protocols:
# we needs "contrib" servers
I traced a syscall to open this file
$ strace -e trace=open -o mania.log maniadrive-wrapper
$ grep repo mania.log
open("/usr/share/raydium/rayphp/rayphp/repositories.list", O_RDONLY) = -1 ENOENT (No such file or directory)
so the source of the issue was located.
/usr/share/raydium/rayphp/repositories.list (where it's actually located)
/usr/share/raydium/rayphp/rayphp/repositories.list (where the game searches for the file)
I tried to put the file where the game expects it to be to make sure it would work. It worked like a charm.
Now it's time to report fedora maintainers about this issue.