Add audio annotated images

I'm would like to be able to take a picture of student writing work (we don't use identifying information in our work), add an audio note about the strategy the student used, and upload the connected photo/audio file to the wiki. Any suggestions? Students could also audio annotate their own photos of work. Authors teaching authors.

(We don't have enough computers for everyone to be writing, commenting, annotating on the computer.) My partial solution is at: http://teacherse.pbwiki.com/Audio-Notes
Thanks.