squeezelite: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/squeezelite - from package: squeezelite-pa
/usr/bin/squeezelite - from package: squeezelite

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