Installing Multimedia Support: MP3, DVD, and DivX
Because of licensing and other restrictions, many Linux distributions do not include MP3, DVD, or DivX media support in their free versions. You have to purchase their commercial versions, which include the appropriate licenses for this support. Alternatively, you can obtain this support from independent operations such as those at fluendo.com. DivX support can be obtained from labs.divx.com/DivXLinuxCodec. Check the multimedia information pages at your distribution website for more information.