Examples of usage:

<xp:TextBlock VerticalAlignment="Top" Text="{Binding Path=[article.bodyTextH], Converter={StaticResource UnitConverter}, ConverterParameter=in::{0:0.00} in}" />

<xp:TextBlock Margin="4,0,0,4" Text="{Binding Path=[video.duration], Converter={StaticResource UnitConverter}, ConverterParameter=min s::{0:00}:{1:00} (m:s)}"/>

<xp:TextBlock Margin="4,0,0,4" Text="{Binding Path=[audio.duration], Converter={StaticResource UnitConverter}, ConverterParameter=min s::{0:00}:{1:00} (m:s)}"/>