All of the prog files that I've downloaded (.sit files especially) remain LimeWire documents...Changing names doesn't work or using latest Expander, Disk copy, Launching from Library etc. ad nauseum. Thinking that files have been corrupted, have downloaded from different locations....Nada, nothing! Forum suggestions not helpful either. I'm starting to suspect that LW is adopting a Microsoft attitude toward Mac users...."Release Now & Fix Later".....