"Dan Sgambelluri" wrote in message
news:G_C1e.817244$6l.759640@pd7tw2no...
What does the error message say?
What file types do you play that would get this error?
Did you install the new Windows Media Player?




As a first guess, I'd think that WMP is not listed as the default program
for the OPs audio files. Likely that Music Match or Dell Media Experience
or some other program has grabbed the audio files and changed their file
associations.....


Stew