Sharing music files, I'm running a MacBook Pro with the Intel Core, OS v.10.5.4 and v.14.8.1 of LimeWire Pro. I haven't tested all the potential access points in the Mac's OS Network/Sharing functions which might allow your files to be "shared." LimeWire allows a number of sharing options, Network Preferences add more, Sharing Preferences add another layer as does the Accounts Preferences pane. Perhaps someone can say definitively these System Preferences cannot, or do not conflict, confuse or override Limewire's settings but, I find LimeWire quirky in many other ways on a system level. The Sharing Preferences pane alone offers 11 ways others might share your files, view your files, view your current web page, etc. What kind of network are you on? Using Airport? A "macintosh.local" network in your dorm might present easy access for some. I travel alot and am cautious while using hotel WiFi but still spot other guest's machines on the local network often, my own as well. I check and reset my settings but... Last thought-I do think LimeWire has issues, basic issues like saving conventions that work the same way every time and, Directory/Library issues. I am not using the latest update.