I've also encountered this problem. Rather than copy-pasting a blob of text which I don't understand, I tried to figure out which parts of the suggested answer are useful.
- Edit the
Append either of the following lines (at the
[Added Associations] section):
- Save and Firefox will use Dolphin from now on.
You do not need both lines. Whichever comes last defines the file browser to be opened.
This configuration file maps a mime-type to a
.desktop file, which defines which application ought to open the file. After the mime-type, a semicolon-separated list of possible applications is listed. The left-most application has the highest priority, the rightmost file has the lowest (fallback) priority.
*.desktop files are located at
kde-*.desktop files are located at the subdirectory
/usr/share/applications/kde4/dolphin.desktop , for example )