SoundSwitch makes it easier to switch playback devices (sound cards).
Normally, to switch a Playback device you need to right click the sound icon in the bottom right corner of your screen (system tray),
choose "Playback devices" and then change the default playback device.
Every time you want to switch.
With SoundSwitch you just configure once between which Playback devices you want to toggle and then you can press Ctrl+Alt+F11 to toggle automatically!
Go to the documentation
to get started.
For the named sound devices (now you don't have to fiddle with numbers anymore!)
Easy manual switching between devices by clicking the SoundSwitch icon.