Hi, Stacey, I'm not sure about the Istream program, but I can tell you that I can download books from the nls website, unzip them on the mac, which is super easy, then use an sd card reader to copy each book onto the sd card which I then put into the Stream. Very easy! And I've had my mac for only about 2 and a half months. Hope this helps a bit! Marcy > > Click on the link below to go to our homepage. > http://www.icanworkthisthing.com > > Manage your subscription by using the web interface on the link below. > //www.freelists.org/list/macvoiceover > > Users can subscribe to this list by sending email to > macvoiceover-request@xxxxxxxxxxxxx > with 'subscribe' in the Subject field OR by logging into the Web > interface at //www.freelists.org/list/macvoiceover >