The web interface is same as the web interface of a normal web browser on your PC. Also, all features are available and the C-MOR web page is almost the same as you are used to with your PC.
For each user, the interface can be configured to be optimized for tablets in the System Administration > User Adminstration > User Configuration menu. This optimizes navigation for tablets:

Once recordings are listed there is an extra button “Preview” enabled. By tapping on this button the video preview shows up:

The recording video is downloaded and played once the preview picture is tapped.