I'd like to suggest a portable application to add to this website: FreeMPC
FreeMPC is a freeware, graphical and easy to use application for listening and converting MPC audio files. It can convert MPC to WAV and to MP3 (all bitrates). There is no need to install it, just double-click the file. You do, however, need to have Java installed and properly configured (i.e. associated with .jar files) to enable this ease of use.