mpris-remote: 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/mpris-remote - from package: mpris-remote

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

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