lqtplay: 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/bin/lqtplay - from package: quicktime-x11utils

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

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