Nokia: X6 Music Player Not Working

The music player on my Nokia X6 is not working. It was fine for the first few days I had it, but suddenly it didn't recognise that there was any music on the phone. I have tried refreshing the music library, re-installing the entire software on the phone, doing a hard reset, and deleting a 'corrupted file' from my PC. All of these were suggested to me by Nokia, I have spent a lot of time on the phone to them and persevering at home, deleting all the files off the phone, reinstalling the Nokia Ovi Suite and Music Player, starting again with downloading music to the phone and refreshing the music library in the music player. None of these have solved the problem and now if I select refresh music library the phone gets stuck on trying to update the library and I have to turn it off then on again to be able to use it for calls etc.