I think "smartMedia" is one of the best and easy to use Multimedia-Tools for Xoops. Have a look > to a running example with wmf (Windows media Player) System: XOOPS 2.0.9.3, Modified Standard Theme
First, you must store pictures with the Picturemanager in your Admin-Area. Now, all pictures are available for your editor in TinyContent and other modules. Hope, it was helpful...