daisy-player: 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/daisy-player - from package: daisy-player

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

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