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I can hear audio from bluetooth headsets on my iPad/iPhone, but I can't record audio in Applications from the headset. Even the sample "SpeakHere" application doesn't record audio from the headset. Is there a reason audio out works seamlessly but audio in doesn't work? I'm trying to use an Aleph Jawbone headset. Source: Tips4all

I want to be able to play sound files in my program. Where should I look?

we are actually developping an audio service (in the android sense of the term) and we have quite of lot of tests to cover many aspects of our APIs. But we are actually wondering for good things to do to test a service efficiently. So this question is quite open: how would you test an android service ? We are currently using JUnit + EasyMock on test both on real devices and Continous Integration server (via an emulator). Any suggestion is welcome, thx in advance. PS : we have been searching SOF for similar threads but we just found a few cues in those depleted threads : Instrumentation Test case how to bind service from activity Android Service Testing Why is an Android Service not singleton when testing?

I have a music file with a particular tone(music.mp4). I want to convert existing sound file (speech.mp4) into the tone which is specified in music.mp4. Its like converting a speech into some particular tone. I do not want to play both files simultaneously. I want to convert source file with help of some music file. So, output file will be converted file. Is it possible? I searched for Audio Unit Hosting and Multimedia guide. But do not get any clue. Thanks in advance.

Is there a way to force visitors in my website, that use smartphones, to heare music only through headsets? That is, force the mobile browser not play sound with the speakers? An answer for only android/iPhone will be good as well.