Using Optional Audio Components - Sony MHC-EC68USB Operating Instructions Manual

 Folders that have no MP3 files are skipped.
 The system can only play MP3 files that have
a file extension of ".mp3. "
 If there are files on the USB device that have
the ".mp3" file extension, but that are not
MP3 files, the unit may produce noise or may
malfunction.
 Up to 999 MP3 files or 997 folders can be
contained on a single USB device.
The maximum number of MP3 files and
folders may vary depending on the MP3 file
and folder structure.
 Compatibility with all MP3 encoding/writing
softwares, recording devices, and recording
media cannot be guaranteed. Incompatible
USB device may produce noise or interrupted
audio or may not play at all.
0
GB
Using optional audio
components
1
Connect additional audio
component to the AUDIO

INPUT jack
an analog audio cord (not
supplied).
2
Turn down the volume.
Press VOLUME 
3
Select the AUDIO IN function.
Press FUNCTION
"AUDIO IN" appears.
4
Start playing the connected
component.
5
Adjust the volume.
Press VOLUME +/
To connect an optional headphones
Connect headphones to the PHONES

jack on the unit.
on the unit using

.

repeatedly until

.