I just discovered CWAF about a month ago and it works well for me, especially after many frustrations with hanging/crashing running the clean audio folder routine. With CWAF I click on the Status column so it sorts them where all the orphaned files are at the top. Then I highlight these orphaned files and choose Move Wave - another window opens - I choose Recycle Bin to move them there. Then I do rescan with Find to make sure they're moved and that I got them all. Then every once in a while I clean my Recycle bin. I've never had any problems with doing that but I also do project backups regularly just to make sure. By the way, the referenced files are your good files that belong to projects which I wouldn't mess with.