use quality instead of nominal bitrate on Vorbis
use quality instead of nominal bitrate on Vorbis

because apparently ffmpeg chokes on some files when setting a nominal bitrate

eqbeats/eqbeats,eqbeats/eqbeats,SuperStarPL/eqbeats,eqbeats/eqbeats,eqbeats/eqbeats,codl/eqbeats,SuperStarPL/eqbeats,eqbeats/eqbeats,SuperStarPL/eqbeats,codl/eqbeats,codl/eqbeats,eqbeats/eqbeats,SuperStarPL/eqbeats,codl/eqbeats,SuperStarPL/eqbeats,codl/eqbeats,SuperStarPL/eqbeats,codl/eqbeats