xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="DeclarativePlayback" Height="300" Width="300">
Volume:
Value="{Binding ElementName=media, Path=Volume, Mode=TwoWay}">
Balance:
Value="{Binding ElementName=media, Path=Balance, Mode=TwoWay}">