Purchased music with an old e-mail address I no longer have access to

Hi,

I would like to hear the music I purchased with an old itunes account with an e-mail address I no longer have access to. The song is in my library, but when I try to play it, the dialogue box pops up that says that I must authorize the computer to play the song. The e-mail address that the song was purchased by is no longer active. What should I do?

Thanks for your help and advice.

O