Music purchased with AOL id won't copy

Hi, before I was a Mac user, I used iTunes and purchased many songs using my AOL id.

Now I cannot play that music nor can I copy it to my iPod or iPhone.

I've put up with this for several years and am tired of the problems.

How do I get my music that I paid for work on my machines? Who do I call to get that ID attached to my Apple ID?

Vicci - tired of wasting money

Thanks.