It's easier than you think to email an MP3. Chances are that you're probably already familiar with how to attach a document to an email. The procedure for emailing an MP3 is the same. All you have to do is open your email program and upload your MP3 as an attachment.
Open and log in to your email program.
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Compose your new email message. Fill in all of the fields for subject, address and message either now or after you attach your MP3 file.
Find the "Attach" button and click it. A browser window will open.
Locate the MP3 file on your computer. Double-click on the MP3 file and wait for it to be uploaded to your email as an attachment.
Fill in the address, subject and message fields of the email if you haven't done so already and click "Send" to email your MP3.