sorry, didn't search before posting to see if this has been discussed already, but I think I have found out a way to feed your es2 with just an iPad.
I got a Kingston MobileLite G3 wireless USB storage gizmo for my iPad yesterday, and it also happens to have SD card support. But much to my surprise, it seems to be able to read and write es2 formatted SD cards! I was able to render wavs out from my Gadget app into the audioshare app, trim, normalize and uploaded to the es2 sd card, and it is working perfectly!
Just a quick tip to yall who hate their laptops/desktops and love their iOS gizmos more
