soundinfo: 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/soundinfo - from package: siggen

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

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