I can't test it myself, because I do not have a Windows machine here right now.
But maybe the problem is that IE9 only supports the MP3 audio format, while LCWO currently uses OGG/Vorbis with the HTML5 tag. It'd be possible to change this for the IE9 users. I'd expect a different error message than "not supported" then, though.
I will read up a little on IE9's HTML5 support and get back to you if I found something out.
Posted: 2011-02-27 05:55
Thanks Fabian. It may also be because IE9 is still in Beta, though I didn;t see anything about the HTML5 Audio tag having half-shod support. We shall see...