As I am facing an error with my media player

Hello Everybody,
I like to listen to instrumental music in my system. But I am not able to listen for 1 week as I am facing an error with my media player. It says that license is already installed. Now, I am planning to purchase a new computer as the mother board and RAM are to be upgraded.
I want the experts to tell me whether all my default settings will be affected or will they remain same.
Please confirm me soon so that I can go for new computer up gradation.
Thank you very much.
