Mount the image but don't install it yet; that will install through Steam. Use the Phoenix program - google 'phoenix version 14' or however you can find it. There's a link in the description of that youtube tutorial.
Extract Phoenix.exe (it will install it quickly)
Run the program
Click Instruments > SID Unpacker
Under Sim File click the icon with three dots (Browse)
Open Mafia II_disk1.sim from the .iso image in whatever drive you have (it should be the only .sim file, so it's not hard to find it)
And under Destination Folder create a new folder, Mafia 2 in Program Files, wherever you want it, whatever you want to name it
Click Scan a SIM-file
Click Mafia II and English (if you only want English or click Select All)
Now Unpack and wait (took me less than an hour)
Get yourself a crack, I got it from Mafia 2 Crack fix ZHONGGUO
Copy mafia2 and steam_api.dll and Paste it into the 'pc' folder of the Mafia 2 folder (wherever you installed it - I have C:\Program Files\Mafia 2\pc)
Create a shortcut of the mafia2 from the 'pc' folder on the desktop, wherever you want to
Run the game
Have fun!
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