I just found out how to make them work in Firefox, but it does require you download the Windows Media Firefox Plugin... takes about 1 second to download and about 10 seconds to install, then the audio files will play in FF.

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In Christ,
brother Sonnie

Jeremiah 6:16 Thus says the LORD: "Stand in the ways and see, And ask for the old paths, where the good way is, And walk in it; Then you will find rest for your souls. But they said, 'We will not walk in it.'