Hello, My name is Grant and it has been a while since I have been active on this list. I have a new DAW purchased from DD That is running Sonar 8.5 under windows 7 64 bit, a MoTU Fastlane midi interface and a Motif ES synth. I am getting some sporadic playback of midi files, however if I assign the outputs to the TTS1, it plays fine. I have downloaded the drivers for the MOTU interface (that is suppose to support 64 bit) on my new DAW and have double checked all connections, but still get inconsistent play back when using the Motif's synth and the MOTU interface. There are several notes that continue to play after I have pressed the space bar to stop playback. There are portions where a track will pause and then pick up later and otherwise random notes that play out of no where that are not on the events list. I can play the same files on a 15 year old computer using windows XP with Sonar 7.0 Producer using the same outboard gear with no problems. I thought that there may be a setting somewhere that may fix things, so I have gone between my old rig and the new one to make the same selections in the global and project option. From what I remember, there was not much to change in either of these dialogs. Any suggestions would help. Many Thanks, Grant