Hi i found it in jetaudio/forums The silent installation is Running set-up with a response file To run the installation in unattended mode, you have to call the installation with the following command line: jtb3.exe -s -a -s -f1" <Full path to snapshot file>" Omit the triangular brackets but keep the quote marks JetAudio Plus v6.0.6 Build 4806 (Retail) install\\JetAudio\\jtb3.exe -s -a -s -f1" it works thanx 2 Dirk