Avalon Streming Module outside SOPC-Builder

Hi,

SOPC-Builder offes some useful Avalon-ST-Interface Modules.

For example: Avalon ST Multiplexer or Avalon ST Demultiplexer

Is it possible/allowed to add these Modules to custom source-code?

So it would be possible to use Avalon-ST-Interface for internal datatransfer of custom Avalon-Modules.

I could not find these Modules within MegaWizard Plugin Manager which schould be the tool to create these kind of modules outside SOPC-Builder.

thx

Josef