tao2aiff: 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/tao2aiff - from package: taopm

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

Error in other languages:
tao2aiff: bevel nie gevind nie
tao2aiff: comandă negăsită
tao2aiff: comando não encontrado
tao2aiff: commande introuvable
tao2aiff: command not found
tao2aiff: käsku ei ole
tao2aiff: không tìm thấy lệnh
tao2aiff: komanda nerasta
tao2aiff: Kommando nicht gefunden.
tao2aiff: kommandot finns inte
tao2aiff: komut yok
tao2aiff: nie znaleziono polecenia
tao2aiff: níor aimsíodh an t-ordú
tao2aiff: no se encontró la orden
tao2aiff: no s'ha trobat l'ordre
tao2aiff: opdracht niet gevonden
tao2aiff: parancs nem található
tao2aiff: perintah tidak ditemukan
tao2aiff: príkaz nenájdený
tao2aiff: příkaz nenalezen
tao2aiff: команда не найдена
tao2aiff: командата не е открита
tao2aiff: 命令找不到
tao2aiff: コマンドが見つかりません