Changing the default application to open files - Ubuntu 11.04
 

I want to change the application that opens my mp3 files.

At present if I double click an mp3 it opens in the movie viewer for some reason. I know I can use "open with..." to get a file to open in Rythymbox instead, but I have over 800 mp3 files and want to change the default for all of them.

In Nautilus, right click on the file and choose Properties from the menu that appears. The Properties dialog opens.

Click on the Open With tab. A list of applications appears.

Select the default application you want for the file type. If the application is not on the list, use the Add button to add the application to the list.