#!/usr/bin/env bash

dir="${1:-.}"

find "$dir" -type f \( -iname "*.mp3" -o -iname "*.flac" -o -iname "*.m4a" -o -iname "*.ogg" -o -iname "*.wav" -o -iname "*.aiff" \) -print0 |
xargs -0 -P"$(nproc)" -I{} bash -c '
    if ffprobe -v quiet -show_entries format_tags \
        -of default=nw=1:nk=1 "$1" 2>/dev/null |
        grep -q -E "Visit https?://[^ ]+"; then
        echo "Match found in: $1"
    fi
' _ {} | sort