I just finalized the installation of Tony Hawk: Pro Skater 3 and (following the instructions I online) everything in that process seemed to work. When I then tried to run the game, I received a pop-up with the following wording "CD copy protection check failed. Please insert an official Tony Hawk's Pro Skater 3 CD and restart the application."
The thing is, the CD is already in place - I imagine that I need to mount the CD-player in play on linux somehow... I am a totally new user of play on linux and very inexperienced when it comes to Linux too - so any advice would be much appreciated.