1. Download the latest version of rtmpdump for Windows.
2. Extract rtmpdump.exe into the Replay Media Catcher folder (by default it is C:\Program Files\Applian Technologies\Replay Media Catcher 4).
3. Open Replay Media Catcher 4 and go to the Settings. Configure as shown below:
   
   Code:

   Protocol: RTMPE
   Url Match: somevideosite
   Executable: rtmpdump.exe
   Parameters: -r "{url}" -o "{file}"

The biggest problem with this approach is that RMC 4 can't decrypt RTMPE streams, it can only get RTMPE URLs from playlists when they are available. Also to download streams using SWF verification you need to provide additional parameters for every web-site that uses this kind of protection.