Many times when you install applications, they may change the file type associates of which application will run when clicked on. An example is when you click on a file with an txt extension, Windows will open Notepad.
FireFox also has file type associates so it can handle which applications to use when you click on a video or audio file on the web page your are browsing. Unfortunately accepting the default during installation of an extension or plug-in can alter the file type association much to your dis-liken. Fortunately there is an easy fix.
Open FireFox, then from the menu select Tools / Options. In the Options window, select the Content tab and click on the Manage… button (in File Types section).
To change a File Type Extension, select the file type and click the Change Action… button. In the example below I changed the MP3 Format Sound from Apple Quicktime plug-in to Windows Media Player.
After making the change, click OK then Close. Now when I go to a web page that has a mp3 file, Windows Media Player will launch and start playing.
The Change Action button has several options available:
– If you want the file to open with the default external program for that file type, select "Open them with the default application"
– If you want the file to open with an external program other than the default, select "Open them with this application". You will be prompted to select a program.
– If you want the file to be saved instead of opened, select "Save them on my computer".
– If a plugin exists for a file type, you can select "Use this plugin". This is the default action when a plugin is available.
To view all plug-ins installed in FireFox and the file type extension associations, type about:plugins in the address field.