My team is heading to Bolivia again and this time we'll have internet access!

We'd love to find a system (online app or code) that allows us to put audio files in a secure server, and which has a simple and intuitive interface where our informants can log in, listen to an audio clip, re-speak it, transcribe it on a piece of paper, take a photo of the paper (perhaps with their phone) & upload that photo to be stored together with the rest of the information on that clip, and then move on to the next clip.

Does anything like that exist? What would you recommend? Feel free to email just me, and if so, let me know if I can share back the suggestions with the group.

Thank you in advance,

Alex