Yazsoft today announced the availability of Speed Download 4.1.7, an important update to the the fourth generation of Yazsoft’s award-winning download manager for Mac OS X and a brand new iPod (RED) giveaway. Version 4.1.7 adds some key new features and improvements and is a recommended update for all Speed Download 4 users. In addition, Speed Download now includes a link to Transmission, a a free, lightweight BitTorrent client featuring a simple, intuitive interface on top of an efficient, cross-platform back-end.