Avalon Streming Module outside SOPC-Builder

[Altera_Forum]

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