Problems with streaming audio and Firefox?

I have now purchased a couple of digital radios (a Revo and a Kogan) that have the ability to stream internet streams as well as play DAB (Digital Audio Broadcasts). While I was setting them up for internet streams at http://www.wifiradio-frontier.com I found that Firefox wouldn't let me preview .3mu files - all I got was "Waiting for video". It turned out that VLC, a very versatile media player, had installed a plug-in in Firefox that caused the problem. Just disable that plug-in and you can then select your desired player (eg Windows Media Player).