Updated yesterday´s Quadro Version: TaikoTrance_061117CQ for better Channel Separation. Tested with 4 different Midi versions: WinXP Midi Editor and MediaPlayer Win10 WMP and Winamp. Uses the Winamp "Immediate Version" qte send midi events to os in realtime unqte for best results.(Microsoft Soundmapper) The 4 channel playback is identical on all versions but winamp is more dynamic and "alive". Supplied also the MP3 Version. Please compare and tell me if there is any difference, there should be none. This is still the testing phase so will be grateful for any assistance as this has never been tried before, The PhaseShifting should be more or less compatible with most 4 Channel surround systems ; https://1drv.ms/f/s!AmWYApv7ZBFG5UoPDZkDk7NLcqXr ; Albrecht