core-audio

I am using the SoundEngine sample code from Apple in the CrashLanding sample to play back multiple audio files. Using the sample caf files included with CrashLanding everything works fine but when I try and use my own samplesconverted to CAF using afconvert all I get is a stony silence ;) Does anyone have settings for afconvert that will produce a CAF file capable of being played back through OpenAL? Dave Verwer afconvert -f caff -d LEI16@44100 -c 1 in.wav out.caf References: Apple's Multimedia Programming Guide: Using Audio: Preferred Audio Formats in iOS afconvert(1) man page (use afconvert

Rewriting this question to be a little more succient. My problem is that I cant successfully write an audio file to disk from a remote IO Unit. The steps I took were to Open an mp3 file and extract its audio to buffers. I set up an asbd to use with my graph based on the properties of the graph. I setup and run my graph looping the extracted audio and sound successfully comes out the speaker! What I'm having difficulty with is taking the audio samples from the remote IO callback and writing them to an audio file on disk which I am using ExtAudioFileWriteASync for. The audio file does get

When you play a music, the music title is shown below the time in the lock screen. I have also seen how TuneIn radio does that by showing the name of the currently playing radio station. How do you do that? Read the documentation: MPNowPlayingInfoCenter And here is an example code that will work on iOS 5 and it will not crash on older versions of iOS. Class playingInfoCenter = NSClassFromString(@"MPNowPlayingInfoCenter"); if (playingInfoCenter) { MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter]; NSDictionary *songInfo = [NSDictionary dictionaryWithObjectsAndKeys: @"Some