Ford 2013 Flex Owner's Manual page 430

When you select:
Select Source
2013 Flex (471)
Owners Guide gf, 4th Printing, December 2012
USA (fus)
SYNC®
You can:
SYNC USB: Press OK to access music
plugged into your USB port. You can also plug
in devices to charge them (if supported by
your device). Once connected, the system
indexes any readable media files. (The time
required to complete this depends on the size
of the media content being indexed.) If
Autoplay is on, you can access media files
randomly as they are indexed. If turned off,
indexed media is not available until the
indexing process is complete. SYNC is capable
of indexing thousands of average size media
and notifies you if the maximum indexing file
size is reached.
Bluetooth Audio: This is a phone-dependent
feature which allows you to stream music
playing on your Bluetooth-enabled phone.
If supported by your device, you can press
SEEK to play the previous or next track.
SYNC Line In: Press OK to select and play
music from your portable music player over
the vehicle's speakers.
Note: If you have already connected a device
to the USB port, you cannot access the line in
feature. Some digital media players require
both USB and line in ports to stream data and
music separately.
429