when asking questions in this forum for questions about html, css and scripting it is helpful if you can provide a link to your website or at the least copy and paste your markup/scripts/css using the code insert tool on the Edit box toolbar.
IE9 supports the html5 <audio> and <video> tags... you need to be using the (x)html5 dtd. You will find links to documentation here -
http://msdn.microsoft.com/en-us/library/ie/ which is at the top of this forum......
see Home, Docs, Samples, Communtiy
for msie browsers you use either an <audio> or <object> tags with an <embed> fallback for other browsers.... see documenttion links above or visit your favorite music website (not apple) and see View>Source