Right now, we only have a push API and not a pull. So now, there isn’t a way yet to handle this. The only way to add the current song is by manual input to a playlist at this time.
In our PRO version, we can pull the current song-playing artist and title into the persistent audio player bar that comes with that upgrade, but it comes through the Shoutcast or Icecast feed URL and not through a .txt file.
You can see the Now Playing/Playlist widget here: https://demo.radiostation.pro/widgets/
Future versions of PRO will enable playout systems to export show and playlisting data into WordPress, but we have no plans on enabling that type of system for the FREE version at this time.
If you are a developer or have a developer that wants to contribute code to the project to enable something like this, you can certainly do that by issuing a pull request on our Git repo at https://github.com/netmix/radio-station. We’d love to get help with the project to enable things like this from the community.