What a bunch of bullshit, Traktor.

SetUnsetPublishTagToLabelValue

#!/bin/bash

# @earthmeLon

unset x
unset y
x="$(metaflac "$1" --show-tag=PUBLISHER| sed -rn 's/PUBLISHER=(.*)[\;]*/\1/p' )"
# Only take the first value, since Traktor doesn't support multi-value tags AT ALL.
y="$(metaflac "$1" --show-tag=LABEL| sed -rn 's/LABEL=(.*)[\;]*/\1/p' )"

if [[ -z $x && -n $y ]]; then
        echo -e "$y\t\t\t$1"
        # Set PUBLISHER as LABEL because Traktor is Microsoft'ing us again...
        metaflac "$1" --set-tag=PUBLISHER="$y"
fi


# find -name '*.flac' -exec bash -c 'SetUnsetPublishTagToLabelValue "$0"' {} \;