Add it to your server
In your server's .ini file (servertest.ini by default), add these to the existing WorkshopItems= and Mods= lines, separated by a semicolon (;).
WorkshopItems=3739256725;3828894107
Mods=NewMusic;MinecraftAlbum
These lines include the mod it requires, as its Steam page declares it:
- New Music [42+] ·
NewMusic
| Workshop item | Subscribers | Declared in |
|---|---|---|
| New Music - Minecraft [B42]3828894107 | 8 | description footer |