This unit plays audio files as follows:

CAUTION
Do not use an audio file extension on files other than audio files. In addition, do not change the audio file extension. Otherwise, the unit will not recognize the file correctly resulting in noise or a malfunction.
NOTE
MP3/WMA/AAC/OGG files written under specifications other than the indicated specification may not play normally or files/folder names may not display correctly.
Operating Tips for OGG
Audio SetMazda 6 Owners Manual: Fuel Economy Monitor
The Control Status and Fuel Consumption are switched and displayed by operating
each icon in the display.
In addition, after completing a trip, the total energy efficiency to date is
displayed in the ending display when the ending display is turned on.
1. Select the icon on the home
screen ...
Mazda 6 Owners Manual: Inspection of dtcs for operation mode
Note
The cruise set indicator light will illuminate for 3 seconds? when
operation mode is on.
If the cruise set indicator light does not illuminate for 3
seconds (Operation mode is not on)? the following may be the cause of the
malfunction:
- Cruise actuator ignition power suppl ...