I'm not sure about the specifics of the audio player, but generally you can test for the existence of a function before calling it, and wrap the necessary code in that code block
Code:
if($('#music').pause()){
// put all your non-IE stuff here
}
// rest of code goes outside of "if" statement
there are other ways of browser sniffing, of course, but they can be unreliable - to me it seems logical that if you are unsure if a function is going to run, to simply test if that function is recognised first