//Can't get this to work!!
AMMediaType getAlacMediaType()
{
byte[] extraInfo = new byte[] { 0x00, 0x00, 0x00, 0x24, 0x61, 0x6C, 0x61, 0x63, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x60, 0x00, 0x10, 0x28, 0x0E, 0x0A, 0x02, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xAC, 0x44 };
WaveFormatEx w = new WaveFormatEx();
w.wBitsPerSample = 16;
w.cbSize = (ushort)extraInfo.Length;
w.nChannels = 2;
w.nSamplesPerSec = 44100;
w.wFormatTag = 27745;
w.nAvgBytesPerSec = 87765;
w.nBlockAlign = 4;
AMMediaType amt = new AMMediaType();
amt.majorType = MediaType.Audio;
amt.subType = new Guid("63616C61-0000-0010-8000-00AA00389B71"); //ALAC
amt.formatType = FormatType.WaveEx;
amt.SetFormat(w);
amt.AddFormatExtraData(extraInfo);
amt.fixedSizeSamples = true;
amt.sampleSize = 4;
return(amt);
}