I uploaded “Friends for Life” on this site as Modded Games. The DLC folder patch is needed if you have the steam version of the game. Since you have a Mac I’m not sure the dlc folder patch .exe is compatible for you. My suggestion is to torrent Mafia II (Mac version) since you already have a legit copy of the game. If you torrent it, you can easily play “Friends for Life” without installing the “Dlc Folder Patch”.
Mafiamods.com IS ASS AND NOT SECURE.
Please use Nexusmods not this garbage site that doesn't allow you to unpublish mods.
Mafiamods got hacked multiple times and they didn't tell people to change their passwords.