Well, on my vacation I spent some time on the plane with my new J2ME book, the one by Knudsen. I learned that some devices my code will run on might not have floating point (!). Also if they do not have the MMAPI they will not be able to record audio from the mic. You can play audio with MIDP 2.0, but you can not record it without MMAPI, or a proprietary vendor-specific API.
Also it looks like I can turn my audio into little files and transfer them over https pretty easily. I used my girlfriend's new Blackberry, and loaded the Google Maps MIDlet onto it. Seeing how slow the connectivity is, I am thinking that I am not going to try full-duplex right away. My buddy suggested PTT (push to talk), and I think that may be the way to go.
Maybe this week I will get some more code going. I was on vacation, after all :)
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