eventselect: 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/eventselect - from package: music-bin

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

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