I have somewhat of a solution to this issue. I too use rss to automate downloads and have files auto categorized with azureus. My solution to this is the program I use to extract. Its called SCRU (Scene Release Unpacker) that will autmatically extract files added to a watch folder to specific folders using regex expressions. There is an option in the program to not copy over sample clips or images. Its a bit tedious to set up at first but after it is I find it works very well. Another handy feature is that it will rename the extracted files to the original folder name that can make them more readable to the plugin. The program can be found at Codebyte.org v2.5