specific to the iPhone app: one word...bookmarks
The ability to add bookmarks to mark your favorite passages.
PROGRESS BAR / SLIDER
Another important iPhone/iTouch feature: downloadable AUDIO must be in a format (proper format? flags set to allow it?) to allow the user to not only pause/play, but also to move anywhere within the recording, using the standard "progress bar" or "slider", (I see it at the top of podcasts. I tap the screen once to toggle it on / off).
I listened to 1/2 of a >2 hour BBC recording of "King Lear" and THEN my iTouch froze. In order to listen to the 2nd half of the audio file, I was FORCED to listen to the 1st half over again.
SELECT & COPY
It would also be great to allow the user of your otherwise wonderful Shakspeare iPhone App to be able to SELECT TEXT and COPY it, e.g. to paste it into a text-to-speech App.
There are a bunch of great ideas we have for the iPhone application (and this is one of them) so keep the ideas coming!