How do you remove background music from an audacity file?

We did a broadcast of a local sporting event and recorded it using audacity. Our studio had background music still running, so the file has all our audio of the game as well as music in the background the whole time. Is there any way to remove the music, and keep our vocals on there?|||Your not going to like this, but you cant.





There is a software that you can do this with though, by a company called Fruity Loops.. it seperates the recorded audio into different sub tracks based on several things.. background noise is one of them.