libmp3-tag-perl (MP3::Tag) -------------------------- mp3info2 and audio_rename both have optional extra features that can be enabled by customisation of the PERLLIB environment variable. To enable this functionality, include the directory /usr/share/doc/libmp3-tag-perl/examples/mod in $PERLLIB. This can be done in, eg, your ~/.bash_profile with: export PERLLIB="$PERLLIB:/usr/share/doc/libmp3-tag-perl/examples/mod" audio_rename requires this for use of the -c option (for transliterating from cyrillic). If this directory is in PERLLIB, mp3info2 automatically picks up extra functionality for normalising field names, with specialised knowledge of various composers.