Cadillac 2005 STS Manual page 90

Playing an MP3 CD
The numbered screen buttons, 1 through 6, represent
the order of the discs loaded in the changer. If there are
only two discs loaded, only screen buttons 1 and 2
will be available to choose from.
r
(Play): Select this screen button or press one of the
available screen buttons, 1 through 6, to begin playing
that disc. There will be a 12 to 15 second delay while the
CD is read, before it begins to play.
3-16
Scan: Select the Scan screen button to toggle between
the following scan options:
X
(Scan One Disc): Select this screen button to scan
the first 10 seconds of each track on the selected
disc. Select the OFF screen button to stop scanning.
When the system has scanned through all of the tracks,
the system will automatically stop scanning.
#
SCAN (Scan Folder): Select this screen button to
scan the first 10 seconds of each track, in each
folder, on the selected disc. Select the OFF screen
button to stop scanning. When the system has scanned
through all of the tracks, the system will automatically
stop scanning.
M
SCAN (Scan All Discs): Select this screen button
to scan the first 10 seconds of each track on each
disc. Select the OFF screen button to stop scanning.
When the system has scanned through all of the loaded
discs, the system will automatically stop scanning.
This function scans all discs with the same type
of media.