ITunes, or something else?

I'm a music junkie and I tend to get my music the old fashioned way, mostly because I like to have CDs in my car. I download specific songs from various acidplanet folks, but I've never subscribed to a music download service, so I'm not sure how to respond to the lady at work that sent me this:
*I* don't have any recommendation, but do you guys? What should I tell her. I don't know of many other than ITunes or Napster. Martha isn't the most computer literate person in the world, and she's on dial up. Ease of use is key, but the cheaper the better! I have a feeling (having shared an office with her for a year) that she will be looking for country music, if that makes a difference.
I figured you could answer this one for me. If I were going to subscribe to a service to download music off the net, do you have a recommendation?
Thanks!
Martha
*I* don't have any recommendation, but do you guys? What should I tell her. I don't know of many other than ITunes or Napster. Martha isn't the most computer literate person in the world, and she's on dial up. Ease of use is key, but the cheaper the better! I have a feeling (having shared an office with her for a year) that she will be looking for country music, if that makes a difference.