Sony CDX-MP30 Operating Instruction page 22

When an MP3 file is played, you can select an
album using the rotary commander.
(With this unit)
To
Skip albums
– Album selection
(With optional unit)
To
Skip discs
– Disc selection
Skip albums
– Album selection
22
Do this
Push in and rotate [once for
each album] the control.
To continuously skip
albums, push in and rotate
(and hold) the control.
Do this
Push in and rotate [once for
each disc] the control.
To continuously skip discs,
push in and rotate once and
rotate again within 1
second (and hold) the
control.
1 To enter Album
selection mode, push in,
then rotate and hold the
control.
Within 1 second,
proceed to step 2.
2 Push in, then rotate
quickly and repeatedly,
to skip albums one by
one.
Changing the operative direction
The operative direction of controls is factory-
set as shown below.
To increase
If you need to mount the rotary commander on
the right hand side of the steering column, you
can reverse the operative direction.
Press (SEL) for 2 seconds while pushing
the VOL control.
To decrease