testMP3Streamer: 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/testMP3Streamer - from package: livemedia-utils

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

Error in other languages:
testMP3Streamer: bevel nie gevind nie
testMP3Streamer: comandă negăsită
testMP3Streamer: comando não encontrado
testMP3Streamer: commande introuvable
testMP3Streamer: command not found
testMP3Streamer: käsku ei ole
testMP3Streamer: không tìm thấy lệnh
testMP3Streamer: komanda nerasta
testMP3Streamer: Kommando nicht gefunden.
testMP3Streamer: kommandot finns inte
testMP3Streamer: komut yok
testMP3Streamer: nie znaleziono polecenia
testMP3Streamer: níor aimsíodh an t-ordú
testMP3Streamer: no se encontró la orden
testMP3Streamer: no s'ha trobat l'ordre
testMP3Streamer: opdracht niet gevonden
testMP3Streamer: parancs nem található
testMP3Streamer: perintah tidak ditemukan
testMP3Streamer: príkaz nenájdený
testMP3Streamer: příkaz nenalezen
testMP3Streamer: команда не найдена
testMP3Streamer: командата не е открита
testMP3Streamer: 命令找不到
testMP3Streamer: コマンドが見つかりません