Yamaha has discontinued their archives of the PLG stand alone editors so the URLs in the Links section here at Yahoo! Groups no longer work.
After searching the Interwebs this week, I've found a copy of AN Expert Editor for PLG150 & AN200 for both Win & Mac.
The Windows archive exceeds the maximum file size allowed for upload to Yahoo! Groups, so I've placed the archive on another accessible website:
http://www.asrxcite.com/asrx/downloads/AN_Expert_Editor.zipThis URL has been added to the Links section here at Yahoo! Groups.
I've uploaded the Macintosh version to the Macintosh directory. Remember this will not run native under OS X, you must use Classic. Else run the Windows version under Boot Camp VMWare Fusion.