dump_album_art.inc: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/share/ampache/www/bin/dump_album_art.inc - from package: ampache-common

You may install the required package with command apt-get install {package}

Error in other languages:
dump_album_art.inc: bevel nie gevind nie
dump_album_art.inc: comandă negăsită
dump_album_art.inc: comando não encontrado
dump_album_art.inc: commande introuvable
dump_album_art.inc: command not found
dump_album_art.inc: käsku ei ole
dump_album_art.inc: không tìm thấy lệnh
dump_album_art.inc: komanda nerasta
dump_album_art.inc: Kommando nicht gefunden.
dump_album_art.inc: kommandot finns inte
dump_album_art.inc: komut yok
dump_album_art.inc: nie znaleziono polecenia
dump_album_art.inc: níor aimsíodh an t-ordú
dump_album_art.inc: no se encontró la orden
dump_album_art.inc: no s'ha trobat l'ordre
dump_album_art.inc: opdracht niet gevonden
dump_album_art.inc: parancs nem található
dump_album_art.inc: perintah tidak ditemukan
dump_album_art.inc: príkaz nenájdený
dump_album_art.inc: příkaz nenalezen
dump_album_art.inc: команда не найдена
dump_album_art.inc: командата не е открита
dump_album_art.inc: 命令找不到
dump_album_art.inc: コマンドが見つかりません