Jeep Liberty: Notes On Playing MP3/WMA Files - Media Center 230 (REQ) — AM/FM Stereo Radio And 6–Disc CD/DVD Changer (MP3/WMA 
AUX Jack) - Understanding Your Instrument Panel - Jeep Liberty Owner's ManualJeep Liberty: Notes On Playing MP3/WMA Files

The radio can play MP3/WMAfiles; however, acceptable MP3/WMAfile recording media and formats are limited.

When writing MP3/WMA files, pay attention to the following restrictions.

Operation Instructions - (Disc Mode For CD And MP3/WMA Audio Play, DVD-Video)
The radio DVD player and many DVD discs are coded by geographic region. These region codes must match in order for the disc to play. If the region code for the DVD disc does not match the region ...

Supported Media (Disc Types)
The MP3/WMA file recording media supported by the radio are CDDA, CD-R, CD-RW, MP3,WMA, DVD Video, DVD-R, DVD-RW, DVD+R, DVD+RW, and CDDA+MP3. ...

See also:

Previous
After selecting Previous from the menu, the screen shows a list of stored previous destinations. Select your destination by touching the bar. The details will be displayed for confirmation. Note: ...

Maximum trailer loads
Never allow the total trailer load to exceed the value specified in the “Towing Load/Specification” chart. The total trailer load equals trailer weight plus its cargo weight. - When towing ...

Inserting the remote key
Holding the end of the remote key with the base of the key blade, insert the remote key into the ignition slot as shown in the illustration and press it in as far as possible (past the detent) ...