I don't know why it's happening, nor do I claim it makes any sense, but it seems related to this bbcode because when I paste your replacement into my 'Test your BB Code' box I get the "The connection was reset" error. When I test other replacements like the one below, they test fine.
If I could get the bbcode reinstalled I would send you a test link, but right now I can't get it to even
store the entries. I uninstalled some other mods I wasn't really using to see if they were causing an issue. I have your files in my cms 4.0.4 root (/www/www/swplayers). I tried deactivating all of my plugins, and I'm going to upgrade to 4.0.5 next to see if that helps.
Brett
www.velocityxl.com
JS
SWF
<object type="application/x-shockwave-flash" data="/misc/audio-player/player.swf" id="audioplayer" height="24" width="290">
<param name="movie" value="/misc/audio-player/player.swf">
<param name="FlashVars" value="playerID=audioplayer&soundFile={param}" >
<param name="quality" value="high">
<param name="menu" value="false">
<param name="wmode" value="transparent">
</object>