After years using GetRight and the excelente Free Download Manager I can tell, is the best evolution of the download managers crew !
You can dowload even vídeos, at least from youtube, easely and convert them meaning no need to use other software if you want change the vídeo -or audio- format.
Also on the free version install you can do all of this but on vídeos there´s a resolution limit to 480p, for me is the most convenient a practical software on these days.