2007 Jeep Grand Cherokee Owner's Manual - Page 209

UNDERSTANDING YOUR INSTRUMENT PANEL 209 Supported MP3 File Formats The radio will recognize only files with the *.mp3 extension as MP3 files. Non-MP3 files named with the *.mp3 extension may cause playback problems. The radio is designed to recognize the file as an invalid MP3 and will not play the file. When using the MP3 encoder to compress audio data to an MP3 file, the bit rate and sampling frequencies in the following table are supported. In addition, variable bit rates (VBR) are also supported. The majority of MP3 files use a 44.1 kHz sampling rate and a 192, 160, 128, 96 or VBR bit rates. MPEG Specification MPEG-1 Audio Layer 3 Sampling Frequency (kHz) 48, 44.1, 32 Bit rate (kbps) 320, 256, 224, 192, 160, 128, 112, 96, 80, 64, 56, 48, 40, 32 160, 128, 144, 112, 96, 80, 64, 56, 48, 40, 32, 24, 16, 8 MPEG-2 Audio Layer 3 24, 22.05, 16 4