When syncing a melody with friends, clicking any song will automatically queue and play that song for everyone nearby. However, that doesn't change the selected song in anyone else's UI.

This becomes a problem when you want to change what tracks your instrument is playing, as you have to select the song that is currently playing which will re-queue it and restart the song from the beginning for everyone.

I think you should be able to select a song without playing it, perhaps with a checkbox at the bottom near the track list button. That way players can change what tracks they want to play for each song without needing to play the song.