kmetronome: 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/kmetronome - from package: kmetronome

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

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