I have a PS4 and have been contemplating either traditional lessons or using Rocksmith. Is it possible to use , I think they're called cdlc files, non official songs on the ps4? I really want Pink Floyd and John Mayer songs. I know you can do it on pc but it's a little less clear for ps4. My only pc is a laptop and I'm not sure the screen is big enough for me. What do you guys think? I gotta get to the next level!