Wordpress File Uploading Problem

I am encountering a problem on my WordPress Website. Any time I take an attempt to upload Mp3 or 3gp File, The WordPress File Uploaded wi display this notification [Sorry, this file type is not permitted for security reasons.]

Sorry, this file type is not permitted for security reasons.

Copy pasting that error into Google implies that it’s a restriction enforced by WordPress. Did you search the web already to see if there was anything else you could find out about that message?