Clicking sound and Offset Video Preview

This makes your application useless. I love it, but it's rubbish if you can't edit with it. It has all kinds of great features, but the editing has serious problems with clicking audio and offset video preview. If I cutt a video, it usually plays a part no where near the timeline location.

Also, on Ubuntu I can't even get it working correctly without installing it with these command lines:
sudo add-apt-repository ppa:jonoomph/openshot-edge
sudo apt-get update
sudo apt-get install openshot openshot-doc
sudo add-apt-repository ppa:cheleb/blender-svn
sudo apt-get update
sudo apt-get install blender