yes, installing the AVC Pack is the easy way. Alternatives exist and they are explained in details in the two links at the bottom of the article I pasted in my previous post. I report them here for convenience:
They are step-by-step guides on how to enable H.264 on server and client side.
As for the two issue you are reporting:
1) special mouse button are not supported yet;
2) that is a bug and we will certainly check it out;