If you haven't already stumbled across it already, you might want to give my package Aglaophone (http://www.tam.cornell.edu/~sdh4/aglaophone) a try. In particular, it's got a blind A/B test module that might come in handy for evaluating small differences between codecs. Steve Holland sdh4@tam.cornell.edu --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/