RealPlayer has presentation features. It can also stream live video and
audio, and combine all those into a Real presentation.
Now I have HelixPlayer on my computer, it is the next generation of the
Realplayer and RealOnePlayer. You can get the linux version from a
HelixPlayer community web site at:
(Page down a couple of times after you go to the page)
or you can get Unix version of Real from Germany or Austria.
For creating presentations you only need a text editor and use the SMIL
format. There are some free tools on realnetwoks site; check for something
like SDK and then UNIX tools.
I think SMIL works on RealPlayer for UNIX and not HelixDNA
You can also download the FREE version of HelixProducer to create media