Hi, I have had my fair share of crazy behavior again. I decided that it might be better just to show people what happens. I have added an asset to a track, I am trying to move the track by adding some silence to align the tracks via audio. Shift-space splits the left part of the track. <http://download.stefan.konink.de/cinelerra-bugs/out-copy.mkv> Moving the track via drag-and-drop-editing mode seems to work. Has anyone an idea what may cause this behavior? I have seen different things when shift-space causes very strange behavior like on one track the asset moves faster than the other. The only thing I can think of is that my base audio (and project settings are 96kHz wav-audio, while the track I now modify is 48kHz aac. -- Stefan