I use the Quicktime plug-in for for Firefox/Firebird but I’ve noticed that sometimes my Windows media player works in Firebird. Probably because of the default file exension for some media types.

The Mozilla (full browser) is probably just as good as Firefox plus it already has a built in email client.

For some reason I like the Firefox better though. Plug-ins are just files copied into the plug-in folder. Want me to send them to you?