Problem: Nokia Player does not start/refresh the Music Library/Cant select song as ringtone

Problem: The Nokia Player opens up, but you cant see any symbols and cant refresh the music library. OR You cant select a song as a ring or alarm tone.
Solution:
Deleting the created music library actually seems to be the solution for various problems. Here is how you do it:

1. The File System Structure may be damaged (which was the cause in my case) and you'll have to run scandisk (Error-checking) on your flash drive your music is in. After that, try running the player again.
2. Go into the folder /Private (its a hidden folder in the root of the flash drive) and you will see several directories like "101f8857", "20001f63".. in it. Find the one that has a directory named "Cache" in it and delete the folder.. This will delete the music library the player has created before and the nokia player should be able to refresh after that.