Voice Cards is an iPhone/iPod/iPad app you can use to create stacks of "flash" cards with auditory rather than written information. The app is currently priced at $.99- very reasonable for such a versatile therapy resource.
Voice Cards is really easy to use and has many applications for SLPs- it would be motivating to use with students' vocabulary lists. Presenting information auditorily will give students an opportunity to work on that modality. I also really wish that this app were available when I was in grad school, particularly to get me through Neuroanatomy- and comps!
Check out the app- if you want to tweet @Buddy_Apps, they told me some promo codes are still available!