I think something like Audacity is the ticket for this, and other mastering tasks. Thanks guys!
Audacity will work just fine for fadeouts and trimming/cleaning up the intros and outros and is a tool I use sometimes as well. However, for the benefit of others who may also be having issues, I don't want to leave this discussion with the impression that RB cannot make a clean fade out or is not up to the task of mastering a track as efficiently as Audacity or any other DAW. Let me explain a bit more for clarification. My comments are not intended to influence your personal workflow or indicate your workflow to be in some manner wrong. I'm giving additional information that others may find useful.
First, a node fade out from the tracks screen can be any length you desire. It can be a straight line or as you mentioned, made to curve. It can be a slow fade or a rapid fade. How the fade out is created determines the length of the fade. You do have to manually create the fade for each track from this screen as far as I Know.
You can fade all of the tracks uniformly from the Mixer Screen by using the Record ONLY Mixer Moves button. For instance, if you have a 32 bar song and wish to fade the song starting at bar 24 do the following.
Set your cursor at Bar 24.
Click on the Record ONLY Mixer Moves button.
There will be a 4 bar count in and recording will begin.
With your mouse, complete your fade using the Master Fader located in the center window.
Stop the recording and if you're satisfied with your fader movements, save the recording.
Reset the Master Fader back to full scale.
Place your cursor at a point prior to Bar 24 and hit the Play Button to review the fade out.
Review the fade out. Notice, rather than the Master Fader moving downward, all the track faders individually and uniformly complete the fade out sequence.
If you are not satisfied with the fade, hit the delete button to remove all recorded fader movements and repeat the process. Be aware this removes all of the saved Mixer recorded sequences and everything has to be done over.
Regarding Trimming tracks and Mastering, RealBand can cut/paste and has very good stock compressors, eq, and limiters to clean up and Master your song without having to export the song to Audacity or another DAW.
With practice and becoming familiar with the program, most users will likely find these tasks are easier and faster to do from within RB rather than moving to another DAW or Audacity. RealBand is not limited to only the stock plug ins and there are many high quality plug ins available that work with RealBand. RealBand also works much better than Audacity with MIDI.
Charlie