Unfortunately, like others, I have run into the 1GB memory limit when working on a large library. Approx 4-5000 songs will load (depending on the cumulative song size) then warn the app is out of memory. I've tried this on a MacBook with 2GB, a G5 Workstation with 8GB and an XServe with 8GB with each using 1GB then dying. Loading less songs simply means the app will die when it hits the 1GB barrier while processing. This program would be a dream come true if it could actually load and work on an entire library from start to finish.