I'm new here. Just got rocksmith and have been following the basics to get songs. The issue I'm having is when I go to download certain songs, there are 4 or sometimes 8 files to pick from. Do I download m.psarc or p.psarc? I can tell the others are for consoles so I don't need them, but I don't know the difference between these two. Thanks for any help in advance! ^-^

Hello anyone?  I apologize for being late to the Rocksmith world but can anybody out there help me?  I am trying to convert my PC game files which end in p.psarc to m.psarc so I can play them on my Mac.  I have tried troubleshooting the website and customer support with no avail.  If anyone has a solution you would be a life saver, by the way the rocksmith toolkit DOES NOT WORK.  I have downloaded the file on both mac and PC and the logo just sits there and never opens.  Thanks for your time.