Command line, Winboard, Arena etc.
Download and install node.js (if you get a choice of engines choose google Chrome V8). node.js adds itself to your path and this is assumed in the example commands below.
Download Lozza from:-
Save into a folder of your choice.
To use from the command line do something like:-
cd lozza folder node lozza.js
If that fails maybe node is not in your path, so either use an absolute directory to address node or tweak your path.
To use in a chess UI like Arena or WInboard, use node.exe (etc) as the chess engine and lozza.js as a command line parameter.
winboard -zp -zippyGameEnd "say Thanks for the game." -ics -icshost http://winboard.nl -icshelper timeseal -fcp "c:\nodejs\node.exe c:\lozza\lozza.js" -fd . -autoKibitz -fUCI -keepAlive 4 -firstXBook