Ofcouse, it has been covered in other WinAmp threads. Here is a simple AutoIt script that does what you want. Silent and WinAmp will not nag afterwards, as the ini is written to to stop tha nag window. RunWait(@ScriptDir & '\winamp513_full.exe /S') ProcessWait('winamp.exe', 5) If ProcessExists('winamp.exe') Then ProcessClose('winamp.exe') If ProcessExists('winampa.exe') Then ProcessClose('winampa.exe') IniWrite(@ProgramFilesDir & '\winamp\winamp.ini', 'winampreg', 'NeedReg', '0') Just save as "_WinAmp.au3" and compile with a rightclick. Then add the compiled "_WinAmp.exe" to the same folder as "winamp513_full.exe" and run it from WPI without switches. EDIT: Thx working