copy download link not works. & please add option to disable desktop notifications. great addon!

A nice download plugin with multithread capability increases download speed with a notification when the download finished.There are several download manager plugins ,but very few can multi thread,works well up to now

This is a good extension because it improves download speed.
However, I suppose it uses only one connection to the server. It would be great if the connections to the server could be 4 to even further increase download speed