I seem to be collecting more scenery and aircraft that expected. can someone recommend a good manager to install and/or keep track of all these items?

http://fsaom.buddyshare.org/

YOu've already named it :) Addon Manager. Check out the site metnioned in the first response. I keep almost 1,300 unique aircraft under full control with AoM not to mention several hundred sceneries.Racartronit means something, but I just can't remember what