...In order to continue using JingleFoxPro you can use Firefox 14 Portable. You also need to copy the "np-mswmp.dll" from the "plugins" directory of your normal Firefox installation to the "plugins" folder (that you need to create first) inside the "Firefox" directory of your Firefox 14 portable. Sorry for this inconvenience!
eSpeakIt is a Firefox extension that converts text to speech (using the espeak command), and plays the audio or saves it for use in portable media players. eSpeak must be installed for this to work. (see http://espeak.sourceforge.net/)