Hi Tony. I'm Greg, an installation specialist and 8 year Windows MVP, here to help you.
No expert in Forums where we see the most cases (by the tens of thousands) recommends RealPlayer bloatware but we do solve problems by having it uninstalled.
If you need another player than Windows Media Player then I'd install the experts' favorite free VLC open source media player, which will pick up all file types that WMP can't play by default, and also serve as a DVD player in Windows 10 where they decided not to include it and the one they want you to buy is buggy. http://www.videolan.org/vlc/index.html
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.