Since nobodys helping you, I'll take a shot at this
assuming the files are under 10mb's right??
use "7-Zip 9.07 Beta" or "winrar"
step 1) open 7-zip or winrar
step 2) create new archive
step3)find the .mp3 file or what ever file you have in mind
step4)save it using .zip file format
step5)save it to desktop to keep things simple
step6)go to yahoo and login in
step7)make an e-mail to send for whoever[at]yahoo.com
step8)use the file attachment key
step9)find the file and click ok
step10) if you need to add more files, repeat step 8 (make sure it's under 10MB's
step11)send email
step12)your done

If you get stuck somewhere, let us know what step your stuck at, so the problem can be narrowed down and the solution be more detailed
