Captivate 7 is no help with Firefox audio, despite my Firefox being able to play mp3 audio on it's own, Adobe's browser check script blocks the html5 movie from playing.
Worse, it does this before checking to see if there is a swf, so even exporting from Captivate as both html5 and swf causes Firefox to balk at playing the file. We are working on a custom player that will do a browser detect and play the swf for firefox and the html5 for everyone else, but it would be nice if Adobe did this themselves - suprising they haven't as it's not that hard to detect the user's browser & platform.