Here's E.C.M.4 .swf files. Think I grabbed it from sadpanda. Unsure what version of the game it was but it was working on an old machine with any Flash below version 20.0.0.228. Incidentally the only one I couldn't get working (having to open each .swf individually) was the first game.
You must be registered to see the links
More or less a PSA but v1.1x of the fifth game has additional scenes.
edit: Rehosted because zankuro is pretty heavy with the DMCA. If link goes down there's always sanic and I believe some spanish blog site also has links. Hopefully it gets added to the OP viewer so you don't have to hunt down links.