Once you know how to build your own radio, it might be possible to modify Diamond City radio to add more tracks rather than overwriting its existing sound files. It is better to create your own radio station firstly. But this is not recommended as it ruins the lore of Fallout. There are a number of mod tutorials that edit ingame radio stations, overwriting existing songs in playlists such as Diamond City radio. Radio mods allow Fallout players to listen to customized playlists during gameplay.
