changes when saving loading

[Betelgeuse]

when talking with digdug we found out that sounds/songs are not saved in saved games. What else is changed? Also can we get a global function to run when a saved game is loaded to take into account these changes? (like a music player has to wait for a song to end to play a new one but if they are not saved there is a space where you can't change music and you don't have your old song after you load the game)