@zing Wow, i dont expected that answer, im gona try the first option you gave, thanks bro...
@Eric-Chin You can actually have a USB stick storing all your data. The OS and data is separated then. After you can do a clean install and just use your usb key there without setting up every ROM, Scrape again.
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I think you have to manually download the game music from somewhere else and then paste it in the prboom folder.