This window is currently not very easy to understand and could use some corrections.

1. Move Audio renderer to the bottom since it's a selection of its own (Automatic Decoder Settings will disable all drop down menus but this).
2. Change the label:
"Automatic Decoder Settings
(use with caution - knowledge of DirectShow merits required)"
to
"Automatic decoder selection
Caution! This option will use decoders based on merits."
3. Change the label "Source Splitter Selection (Try to use Splitter Settings)" to "Manually select Source and Splitter filters *"
4. Change the label "Splitter Source" to "Source filter"
5. Change the label "Splitter Filesync" to "Splitter filter *"
6. Disable the Splitter filter drop down menu if File Source (Async) or (URL) is not selected as Source filter, since it will not be used in this case anyway.