MP4 file is a multimedia file commonly used to store a film or video clip, however may additionally comprise subtitles or images. MP3, which stands for MPEG-1 Audio Layer-3, is a common media format that's used for storing audio informatio…

The m4b format seems to be the identical, just with a letter changed to indicate that it's a e book. Distribute, sell, resell, lend, loan, lease, license, sublicense or transfer any of Your rights to access or use the Companies, together w…