Plot:Set ambient music
From OHRRPGCE-Wiki
set ambient music (song)
Plays a song and sets it as the map's ambient music, that is the song that is played when you enter the map (if you call save map state with mapstate:all or mapstate:mapsettings) or after a textbox with 'restore music' set. Unless you save the mapstate, the effect goes away if you change maps or fight a battle. Calling set ambient music with no argument stops the music and disables the ambient music.
