It is very easy with MosModule, you just create an article to contain the snippet then another article to execute it.

Here are the steps:

First you create an article that contain this snippet code:

What is snippet?

In summary what you need to do is:
. Look for this function in CB: getViewTabContents
. wrap around the return variable with a call to mosmodule_bot in mosmodule_func.php
. That's it!

With this hack you can now use any mosmodule command in CB tab.

With MosModule, it is very easy! You just use the "video" or "flash" command to embed video like this:

{mosmodule video=URLtoVideo}
or
{mosmodule flash=PathToLocalFlashFile}

Here are some working example streaming video from local file and from YouTube, Yahoo Video, Google Video.