There is a demo project that loads if no CF card is plugged in.
Load the demo!
If you go the other route of assuming you can load your own samples quickly, disappointment will follow.
The demo project will get you started, after that you can learn to create your own project and load samples.
Also read “Merlins Octatrack Guide”:
http://www.elektron-users.com/index2.php?option=com_docman&task=doc_view&gid=611&Itemid=30
Peace,
Andy.