I quit and just installed the Flash Professional CC, and there linked to the component path, but it didn't work for some reason. Then I included the FLVPlayback.swf component inside my AS3 app, which compiled etc. but as I learned FLVPlayback wasn't really what I needed.
After some fumbling I made it work with Flex Spark component - VideoPlayer, used inside AS3. You can find some code on the devlist: https://developers.google.com/interactive-media-ads/community?place=msg%2Fima-sdk%2Fc3KH11vxSd0%2FeLuYneYpch4J