If your CD is with mp3s you could just upload the music on your email and send it to your cousin's mail. If the CD is audio first you must rip it. You can use
FreeRIP. Then upload the mp3's and send a mail with the songs.
If your mp3 is larger than 10 MB you can't use Yahoo mail. We suggest to use Gmail.If you don't have an invitation to make a gmail account send us a mail and we will send you an invitation.