My imitation ipod plays oggs. They all seemed to be tagged correctly, but some always showed up as Unknown Artist etc. Couldn't figure it out till I looked at the tags with vorbiscomment. THe only difference was that the 'Unknown' files had tagnames in lower case, like title=badum-badum. Known files had TITLE=etc. Here's a short script to fix this up, and add discnumber tag for good measure (which my player seem to need) #! /bin/bash # capitalise tag names on today's ogg files # add discnumber tag if not already there for ogg in $(find . -mtime -1 -name '*.ogg'); do vorbiscomment -l $ogg | sed 's/.*=/\U&/g' > "$1{1%%.ogg}.tag" if [ `grep -c DISCNUMBER $1{1%%.ogg}.tag` -eq 0 ] then echo "DISCNUMBER=1" >> "$1{1%%.ogg}.tag" fi vorbiscomment -w -c "$1{1%%.ogg}.tag" $ogg rm -f "$1{1%%.ogg}.tag" done The discnumber tag could be added with vorbiscomment's -a flag, but oh well... I got the temporary file bit from some guy on the Arch forums, so thanks whoever you are.