hmmmmm. I can list 4 things that can save you from ever buying another music cd or listening to the radio, because you wont get tired of listening to the "same" cd's, you can just "burn" new ones..
1.
Morpheus or
Direct Connect
2. Broadband internet... i.e T1, dsl, satelite, cable
3. A CD Burner
4. Some cdr's
Of course if you dont have any of these you are going to have to pay money, im paying 33 a month for my cable Which is hooked up to a linksys 4 port router. Its capped @ like 3 megs or something really high, and the upload cap is @ 15kb. Which is normal. Dsl rates usually run a little higher and the download cap is @ 75 kb, which blows especially if you got a router(since that is split to others), but it all depends on what plan you are gettign with that particular dsl company, i named the 40 dollar plan for my area. Of course if you want it "faster" meaning a less of a cap you are going to have to pay more.
Well whatever you can download any song you want, not to mention not have to sit there for retarded 56k and you can find cdr's for less than 10 cents each, it all depends on where you look. The last time i bought a real audio cd(ie not a cdr) was probably 4 years ago.