w2otk is rather easy to use. It assumes that you run it from a directory with music encoded in WAV format, and you want to convert them to ogg vorbis. Furthermore, it is assumed that all the WAV songs belong to the same album.
Once run, w2otk asks you for the album name, the artist name, the encoding quality and other generalities. It also asks for the name of each WAV song, and which songs should be encoded.
After you have given w2otk all the data it needs, hitting the "Encode" button will start the encoding process. w2otk will inform you on which song it is working both in a status line and in the console.
After it's finished, hit the "Exit" button. All the WAV files will still be present in the directory.
w2otk requires TCL and tile. Tile is a replacemnt for tk which, in my opinion, produces much cleaner-looking interfaces. You also must have oggenc installed. Oggenc is part of Vorbis Tools.