I had the same problem and found you could solve it one of two ways:

Install a program called "ncompress" off of your mandrake installation cd. That is the method i used and it works well.

or

download the "LimewireOther.zip" from limewire.com and install that with a version of Sun's JRE. Limewire has instructions on how to do that at their site.

Hope this helps,

Garth