If you don't mind spyware you can run BearShare lite it is a good program it Will connect you to the same Gnutella network. You can find earlier versions of LimeWire there but you must be careful of getting them on the net. LimeWire is a open source code and anybody that wants to and knows how can change it. IE put a virus in it put spyware in it etc. WinMx is not the best program and is on a different net but there is allot of music there. I do not think you will be able to find older version of LimeWire there either but it is spyware free and it is a free program also Below are links for both you will have to choose.
One thing I see nobody has ask you is do you use a router.
http://www.bearshare.com/downloads.htm http://www.winmx.com/download/