In addition to features such as the "News Feed," individual user walls and the ability to upload photos and video to your personal profile, Facebook has a private messaging system, with some features similar to traditional email. If you need to send a file to someone using Facebook, attach it to your Facebook private message just as you would if you were sending an email.
Step 1
Sign on to Facebook. Click the "Messages" icon, which is located on the left side of the site's top navigation bar and denoted by two "speech bubble" icons. Click "Send a New Message."
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Step 2
Enter the name of the person to whom you want to send the file, then a message explaining the contents of the file. Click the "Paperclip" icon in the lower, right corner of the message window.
Step 3
Browse your hard drive for the MP3 file you want to send, then click "Open." Click the "Send" button to send your message and the file.
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