We are planning to add a fully-fledged address book sync (and also a web account too) in one of the next releases. As for rights management for address book records - that's also a good idea. We'll see what we can do in this respect.
UPDATE: We have simplified our licensing even more. Now if you purchase a commercial license you only need to choose a preferred pricing model: per operator or per remote PC. Program functionality is the same for both pricing models (i.e. full functionality of Remote Utilities).
Thank you very much for detailed information. Usually, such issues signify that something is wrong with hardware drivers. I recommend updating sound and video drivers to the freshest version and see if it helps.