FUNimation Entertainment has announced that it is making three of its anime series, Samurai 7, Desert Punk and Speed Grapher available for downloading via Apple's iTunes Store.  The FUNimation offerings will be the first anime releases available via iTunes, which is the most popular of all the Internet sites selling downloadable music and videos.  Individual episodes of the three FUNimation series will be available for a charge of $1.99.