lxmusic: 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/lxmusic - from package: lxmusic

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

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