This mod will adds the music by space age for vanilla players
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
If this doesn’t require owning space age in some capacity, I’m pretty sure that goes against wubes policy. Just letting you know.
https://forums.factorio.com/viewtopic.php?t=120240
You should set any spage feature flag to enabled to make sure any player using your mod has to own space age to stay within wubes rules.
I don't know how to do that, it was just to play with my friend. Later I'll see if I can make my mod private.