Hi thierryb. When you say "works badly" do you mean specifically call recording functionality? If so, then there's unfortunately not much we can do about it. O2 xda flame is a Pocket PC that like most these devices does not allow call recording (hardware restriction).
So, the possible solution is to turn on speakerphone and use Mic Gain feature while recording. The latest version of AudioNotes can do it automatically for every phone calls you make or receive. And what is the competitor that doesn't require from you to turn on speakerphone to successfully record calls? It sounds surprising since it's a known fact that Pocket PC don't allow phone call recording (see the real expert's opinon at
http://pocketpcthoughts.com/forums/v...rd+phone+calls, the second link in the cited post by Menneisyys will give you even more insight).
You mean you record a call with a competitor software without turning on your speakerphone and you can clearly hear the other party? Then I think it's a sensation and you should share this. Bring it on. (I thin most probably what happened was that you had your sys volume at max when recording with copmetitors so the mic could get more from the earphone and when you recorded with AudioNotes the volume was not at max that's why you didn't hear the other party clearly).