There are so many encoders out there from LAME to HANDBRAKE that I would be guessing why you wouldn't encode for the iPads. I'd also be guessing if you researched this with https://www.google.com/search?q=supported+music+formats+for+ipad&ie=utf-8&oe=utf-8
Bob
I'm trying to make a slideshow movie for a web site and yet the originally downloadable music is not working on ipads.
If I use a downloading agent app it will just be an in-app file, which will most likely not be useful.
any idea please?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic