Just remove the 64 bit version. It is not needed if you have the 32 bit version installed. The 32 bit version is kept more up to date anyway. I have always found this to be an excellent player and codec pack and is very flexible.
Thank you all for the replies. I think I downloaded the codecs when i could not play a certain file. I have the VLC player and think even that could not play the file. I think I will do as alanrwood suggested,then if VLC player as problems,try the Windows codecs.