Here is the main.xml. In the 6th line, I inserted the {e}//{t} and it shows in the pop-up as {e}/{t}. I was expecting: elapsed time/total time.
<MJPS version="1.0">
<SKIN Name="Control" Author="JRiver" />
<POPUP>
<Settings Width="300" Height="115" BackImage="" BackColor="" Border="yes" />
<ContentItem Type="image" Name="Thumbnail" X="15" Y="10" Width="75" Height="75" Source="[Large]" />
<ContentItem Type="text" Name="Name" X="100" Y="10" Width="195" Height="15" Text="[Name]" FontStyle="bold" />
<ContentItem Type="text" Name="Artist" X="100" Y="27" Width="195" Height="15" Text="[Artist]" />
<ContentItem Type="text" Name="Album" X="100" Y="44" Width="195" Height="15" Text="[Album]" />
<ContentItem Type="text" Name="Details" X="100" Y="61" Width="195" Height="15" Text="[pn_position]//[pn_count] {e}//{t} [Mood] [Conductor]" />
<ContentItem Type="rating" Name="Rating" X="15" Y="88" Width="100" Height="15"/>
<ContentItem Type="image" Name="Previous" X="115" Y="78" Width="35" Height="35" Source="{PlayerBar,PreviousButton,0}||{PlayerBar,PreviousButton,1}||{PlayerBar,PreviousButton,2}" Tooltip="Previous: Char(10) [Name] by [Artist]" Command="10004,0" TrackOffset="-1"/>
<ContentItem Type="image" Name="Play" X="150" Y="78" Width="35" Height="35" Source="{PlayerBar,PlayButton,0}||{PlayerBar,PlayButton,1}||{PlayerBar,PlayButton,2}" Tooltip="Play" Command="10000" HideStates="2,3" />
<ContentItem Type="image" Name="Pause" X="150" Y="78" Width="35" Height="35" Source="{PlayerBar,PauseButton,0}||{PlayerBar,PauseButton,1}||{PlayerBar,PauseButton,2}" Tooltip="Pause" Command="10000" HideStates="0,1" />
<ContentItem Type="image" Name="Stop" X="185" Y="78" Width="35" Height="35" Source="{PlayerBar,StopButton,0}||{PlayerBar,StopButton,1}||{PlayerBar,StopButton,2}" Tooltip="Stop" Command="10002"/>
<ContentItem Type="image" Name="Next" X="220" Y="78" Width="35" Height="35" Source="{PlayerBar,NextButton,0}||{PlayerBar,NextButton,1}||{PlayerBar,NextButton,2}" Tooltip="Next: Char(10) [Name] by [Artist]" Command="10003,0" TrackOffset="1" />
</POPUP>
</MJPS>