you can get the LimeWire Pro Beta version from your personal pro page, which you should have gotten a link for in an e-mail, when getting the pro version.

The updates are good for six months only. If you are still within your six months, and have lost the e-mail or link check here. http://www.limewire.com/english/cont...pro_lookup.jsp

Just type in the e-mail address you used when getting the pro version.