Windows Media Player How Can I Convert My Real One Player Files To Windows Media Player?

How can I convert my Real One Player files to Windows Media Player? - windows media player

I tried to open and search for files, Windows Media Player. I do not want to copy all the music again. What he says when I try to open a file in Windows Media Player. "Windows Media Player can not play the file. The player can use any support for the file type or the codec to compress the file to assist with." How do I solve this problem?