Sure, go to LW site, Support page & click on pro support. Then enter the email you paid with. LW Pro is available with 6 mths updates so if you purchased it longer ago than that then you are out of luck. Considering LW offers a discount for a month before the 6 months have finished, it's up to you. It's also up to you to bookmark the download page & keep a backup copy of the installer off the computer. http://www.limewire.com/english/content/support.shtml