You can get Kazaa Lite click here but it's not a freebie anymore. If you want to file share, I recommend free downloads from click here or click here both use the Gnutella Network which is supported by a good forum click here
click here I think the owners of Kazaa did a fairly thorough job on Kazaa lite and anybody hosting it on the grounds that it was basically a hacked Kazaa and copyright piracy ( Pot calling kettle black perhaps). Most of the links lead to file share companies playing on the name. Regardless of the legality of much of the material that's swapped, P2P is much abused, regulation and quality of the material available hugely variable. Amount of buggy virus infected crud huge. I wouldn't touch it with a barge pole, but there are those that love it. So very much at your own risk, but if you do go for it, make sure your anti virus is good and updated at least once a day.