Dear friends

Trying to make my first steps with C#. I compiled the System Tray Alarm Clock without error. When executing, I only get a little window with the correct message, but it refuses to play the .mp3 file.  I get the following message :

unhandled exception has occured in your application. If you click Continue.....

The file located not a valid wave file.

Of course, I tried various files that I can read, without problem, with Media player.

Any help

P.S. I am not sure my post is where it should be. Plea   se forgive me and put me on the right track. (french speaking person).