AFAIK it's not standalone, you need a program to load the lame.dll and encode it. That doesn't mean it's not an encoder though, it still encodes the wav to the mp3... When you encode with lame, you'll see a command window pop up and show you what's happening. That's all LAME, so i guess maybe you can run it by itself. So yeah, fuck knows. But yeah, LAME is the best encoder by far, hence using it as scene standards. Use a preset like V0, and you'll get great results (there should be a command line input in the program).