gargoyle wrote: Try it, at home, with a simple (any version) I-Phone.

Place the phone on a feather pillow, on a table, with two feather pillows at the sides. Play and have fun.

If you're going to do it at that level of audio quality, the easiest way to do it on an iPhone is probably the Voice Memo app.

But notice that the question is not how to record; it's how to play back. The basic, straightforward answer is to save the files in MP3 format. That will play in all sorts of things.