It works pretty well in Wine on Linux but not as well as REDCINE did. While REDCINE worked almost perfectly, REDCINE-X has some weird problems with a lot of the text being invisible. I know it's not a supported platform,but I thought some people might be interested.
Hopefully someday you can support Linux too though - I mean, all the libraries you're distributing with it are natively available on Linux systems. The only thing you wouldn't have is Quicktime.