Open local files via "File -> Open File..." or shortcut "Ctrl + o"
Open local .html or .xml file.
Open local .wav file.
Open local .so file.
-- Active ACL Multimedia is required to open .wav file
-- WAV file could be found here:
vp1. The html page can be opened.
vp2. The firefox will play the audio file with its built-in player.
vp3. The file should be allowed to open or save in "open" window.