The following episodes still appear on the above website, but the links below do not appear to work... and then I tried them again, and they did work... I don't know... The website above does work... usually.
Episode 1 http://www.angelfire.com/fl/sapringer/THEDEADLYEARS.html
The Deadly Ears Part 1
The Deadly Ears -Part 2
The Deadly Ears Part 1 http://www.youtube.com/watch?v=pGIZaOCWcPs (3:25)
The Deadly Ears Part 2 http://www.youtube.com/watch?v=GNM97s8ve0k (7:12)
20001 BC: A Space Oddity Part 1
20001 BC: A Space Oddity Part 2
Episode 3 (Music Video)
or on You Tube: http://www.youtube.com/watch?v=_vPWE2Ebz48 (3:46)
The Caveman Trap Part 1
The Caveman Trap Part 2
Marooned in Tattooine Part 1
http://www.youtube.com/watch?v=f7CofEKo3Os (8:18) or
There are a list of many more episodes at this website, but they were never made. I read a comment by the creator that he does not intend to produce more of these.
Reviews: Fan Film Friday: Stone Trek http://acmecinematiccritic.tumblr.com/
A discussion: Stone Trek, “Stone Trek” Creator Brian Matthews
Facebook Page Stone-Trek
Fan Film Friday Stone Trek
Part 1: http://www.axanarproductions.com/fan-film-friday-stone-trek-part-1/
Part 2: http://www.axanarproductions.com/fan-film-friday-stone-trek-part-two/
Also by this filmmaker: Lost in Trek: http://www.angelfire.com/fl/sapringer/LOSTINTREK.html
March 1, 2013, Brian Matthews posted at the Phase II forums that he hopes to create a second season of Stone Trek. I'll be looking forward to it!