gmpc-remote-stream: 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/gmpc-remote-stream - from package: gmpc

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

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