@Darvin3 Totally agreed with the theme song, wish there was some way we could change that, but I don't think mods work on the menu.
Go into your Sins main directory.
Go to Sins/Sound folder
Copy the file 'Opening Theme'
Go to Sins/Entrencment/Sound folder
Paste 'Opening Theme' overwriting the orginal.
Make a backup of the Opening Theme if you so desire.