Buick Regal Navigation Manual page 29

The following restrictions apply
for the data stored on a USB
MP3 player or USB device:
Maximum folder structure
depth: 11 levels.
Maximum number of MP3/
WMA files that can be
displayed: 1,000
WMA with Digital Rights
Management (DRM) from online
music shops cannot be played.
WMA files can only be played
back safely if they were created
with Windows Media Player
version 8 or later.
Applicable playlist extensions
are: .m3u, .pls.
Playlist entries must be in the
form of relative paths.
The system attribute for
folders/files that contain audio
data must not be set.
To play a USB device:
Connect the USB and it begins
to play.
Another way to play a USB is to
press the Now Playing screen
button on the Home Page, then
press the SRCE button on the
faceplate repeatedly to cycle
through all of the available audio
source screens, until the USB
source screen is selected.
While the USB source is active,
use the following to operate
USB function:
1. Press to move forward to the
next track.
2. Press and hold to advance
quickly through playback.
Release the button to return to
playing speed. Elapsed time
displays.
1. Press to go back to the
beginning of the current or
previous track. If the track has
been playing for less than
five seconds, the previous track
plays. If playing longer than
five seconds, the current track
restarts.
2. Press and hold to reverse
quickly through playback.
3. Release the button to return to
playing speed. Elapsed time
displays.