2007 Cadillac DTS Owner's Manual - Page 280

To use a portable audio player, connect a 3.5 mm (1/8 inch) cable to the radio's front auxiliary input jack. When connecting an auxiliary device, the radio automatically detects the device and "Aux Input Device" displays. The device begins playing audio over the vehicle speakers. If an auxiliary device has already been connected, the device does not begin playing audio until the radio's CD/AUX button is pressed. Using an MP3 MP3/WMA CD-R or CD-RW Disc The radio plays MP3 and WMA files that were recorded on a CD-R or CD-RW disc. The files can be recorded with the following fixed bit rates: 32 kbps, 40 kbps, 56 kbps, 64 kbps, 80 kbps, 96 kbps, 112 kbps, 128 kbps, 160 kbps, 192 kbps, 224 kbps, 256 kbps, and 320 kbps or a variable bit rate. Song title, artist name, and album can display when files are recorded using ID3 tags version 1 and 2. O (Power/Volume): Turn this knob clockwise or counterclockwise to increase or decrease the volume of the portable player. You might need to do additional volume adjustments from the portable device. BAND: Press this button to listen to the radio when a portable audio device is playing. The portable audio device continues playing, so you might want to stop it or power it off. CD/AUX (CD/Auxiliary): Press this button to play a CD when a portable audio device is playing. Press this button again and the system begins playing audio from the connected portable audio player. If a portable audio player is not connected, "No Aux Input Device Found" displays. 280 Compressed Audio The radio also plays discs that contain both uncompressed CD audio (.CDA files) and MP3/WMA files. By default the radio reads only the uncompressed audio and ignores the MP3/WMA files. Pressing the CAT (category) button toggles between compressed and uncompressed audio format.