Oaubert,
Thanks for your replay; it helped me find and fix the problem. I looked for the Advene.log file you mentioned above and found it, but it had a file size of 0K. So, I figured that it was an empty file and of no use. But while in the directory with the Advene.log file, I saw a file named "Player.prefs," and decided to change the name of the file to "xPlayer.prefs" to see if Advene would create a new one...and it did. Now the VLC player comes up as the default. Somehow I must have changed the "Player.prefs" file inadvertantly and even doing an uninstall did not remove the changed file.
Thanks again...I would not have figured this out without your help.
Dave Thompson