MetaminaFNR use OGG audio format, ogg is like MP3 but not privative.
if you are using firefox 3.5 or more new version, only click in this square >>
si estas usando como firefox 3.5 o superior, solo haz click en el cuadrado >>

O simplemente pega esta URL en tu navegador
Or copy and paste this URL in your Browser
Other option is to download this file metaminaFNR.ogg.m3u, open and play it with your favorite audio player (with support for OGG audio stream) like "VLC"

Otra opciĆ³n es descargarte este fichero metaminaFNR.ogg.m3u y abrirlo y reproducirlo con audio-player favorito (que soporte OGG stream) como "VLC"