I am using Mac OS 9.2.2 and LimeWire works absolutely flawlessly for me. The "sad excuse" for Java support does not affect me at all.
What is probably happening is an OS issue, go to the Apple website
www.apple.com and download the OS 9.2.2 updates and you should also get the latest version of Carbonlib and MRJ. All the updates are on their site on the Software Updates area. Just search and find them.
Some files though such as AVI and .exe will not work on the Mac, but all MP3 files, OGG, Jpg and other files will. By far LimeWire has the best Mac support for filesharing.