Hi, this is the only thread related to the callrecorder package I could find so I put here some heads-up for the latest version 0.0.9:
There are many new features and all work very nice. Though, due to the change in the filename structure the UI fails to load. Cuong Le Bien, the developer, told me he will try to correct it in a future update.
In the meantime, if you plan to upgrade. it is better to move/rename your folder with all the recordings and let the application create a new one.