how to convert all music to MP3

Hi all you MAC Users out there,

I was trying to think when the last time I had to call or write in. I think it was 1985 on the how could anyone in those days forget the never changing old 800 number.

I know some of you die-hards remember those days and that Apple SOS number!

I bought new heasgear for my wheels and it holds a ton more if they are MP3.

Most of Tunes are already convered to MP3 of which I myself never did. Some of my Tunes are already MP3, but some are not.

Could someone send me a link to the place explaining how to switch convert them over?

Many thanks for you time and help.

Larry

Bar Harbor, Maine