[Zubersoft]

There isn't an option to apply the metronome settings to other songs in the library at the moment. So the only way to do what you are asking is a direct SQL query on the database file itself. I can try to talk you through that if you want to try that (you'll have to enable Settings->Storage->Export Database, transfer mobilesheets.db to your PC, then use SQLiteStudio to invoke queries on it).

Mike