What if you rename the .MP3 to .PDF or .TXT?
Windows Vista. Google and Yahoo Mail.
When I am sending an e-mail using Yahoo Mail and Internet Explorer 9 it won't allow me to attach a music file to the email to be sent.
Allows attachments for Pictures and Documents but NOT music files.
If I use Google and Firefox the music files attach normally.
Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic