I'm wondering if upgrading to CS4 will make my avchd m2ts files playable in the quicktime player without conversion. Or does PPro only playback the files within it's own software? If anybody is using CS4 I'd appreciate it if you could let me know.

If the files playback in Quicktime, then that would allow Cineform Remaster to see and convert them wouldn't it? Or do they need to be contained in a mov for that?