Sony PEG-TJ37 - Manual (Page 6)

means that you can export a playlist straight from most PC audio applications to AeroPlayer.
Advanced Options
Background Playback
AeroPlayer allows users to listen to music while using
other applications on their handhelds. To use this
function, choose 'Settings' from the Options menu.
Under the 'General' tab, select 'Background playback'
and tap on 'OK.' Now, when you switch to another
application, AeroPlayer will continue to play your
music in the background!
***NOTE***
There might be some applications that disable the
background playback.
Controlling AeroPlayer
with AeroPod
There are two ways to control AeroPlayer while using
background playback: directly from the command bar
or with AeroPod.
To control AeroPlayer from the command bar, make
the command stroke ( ) in the grafitti area of your
CLIE. Since some applications do not display the
command bar, it is recommended to perform this
stroke while in the launcher. Along with the standard
icons, you will also see icons for switching to the next track and pausing playback. You will also
see an AE option in the command bar. Tap this button to launch AeroPod.