Java License Key Algorithm After Installing Limewire,it Says I Have To Install Java,please Let Me?

After installing limewire,it says i have to install java,please let me? - java license key algorithm

know where / what site to download and then with Java?
I have downloaded songs in WMA format, how can another, so that I can play and record, because I get / license, copyright, simply by registering, listen to my dvvd other than the "computer