my first cd was either play or up from great big sea - i was... fourteen? or twelve? i can't remember. it was the bright yellow one, anyway. i had several tapes before that, but can't remember what they were. i got the cd and a discman for my birthday that year.
i don't even remember when i got really into mp3s and such, but i know it was probably around eighteen or so (i'm 23 now). that's also, coincidentally, when i learned how to download. ;D