I started searching for C code which implements a MP3 Encoder and found the 8Hz MP3 implementation.
I could have used LAME, but hey.. have you looked at the file count!
The 8Hz implementation uses about 10 files, so it's readable. It's not the best encoder, but good enough to test the possibilities.

I was very surprised that the 8Hz code would compile with llvm-gcc (Alchemy)! That is a good starting point, now I only have to rewrite some code to get input from and output to Actionscript.

The original source used fopen to read and write files. This isn't possible with Alchemy so I replaced fopen with funopen and gave a pointer to Actionscript bytearrays.

The next problem I encountered was the execution timeout in Flash. When encoding large WAV files (more then 30 seconds of sound on my MacBook Pro) the flashplayer will trigger an error about exceeding the maximum execution time. I tried to alter it with the compiler option "-default-script-limits" but no luck (maybe it has something to do with Alchemy).
But it forced me to take a deeper look in the encoding source. I've rewritten the layer3.c file to process a few frames and then give feedback to Actionscript. This way no timeout occurs.

I'm still working on speed optimization, because encoding is slow at the moment.
I will keep you updated!

Here is the first version:

A simple Flash 10 example, haven't tested all possible MP3 rates so if someone encounters a bug, please let me know.
(Just found out that some MP3's with embedded art-work won't work... added to my TODO's).

Code snippet which writes the MP3 data to a SWF bytearray:

while(mp3.audioFrames.length > currentAudioFrame)
{
	var needSamples:int = 0.001 * ((1000/(__frameRate))*i) * audioRate;
	var startSamples:int = currentSamples;
	var audioData:ByteArray = new ByteArray();
 
	while(mp3.audioFrames.length > currentAudioFrame && currentSamples< needSamples)
	{
		var aframe:AudioFrame = AudioFrame(mp3.audioFrames[currentAudioFrame]);
		audioData.writeBytes(aframe.frameData);
		currentSamples = (currentAudioFrame+1) * (576*2);
		currentAudioFrame++;
	}
 
	var samples:int = currentSamples - startSamples;
	var seek:int = startSamples ? needSamples - startSamples : 0;
 
	var af:AudioFrame = mp3.audioFrames[i] as AudioFrame;
	_swfBytes.writeShort(createHeader(SWFTags.SOUNDSTREAMBLOCK,63));
	_swfBytes.writeInt(audioData.length+4);
	_swfBytes.writeShort(samples);
	_swfBytes.writeShort(seek);
	_swfBytes.writeBytes(audioData);
	_swfBytes.writeShort(createHeader(SWFTags.PLACE_OBJECT2,3)); //Place frame data
	_swfBytes.writeByte(1);
	_swfBytes.writeShort(1); //depth
	_swfBytes.writeShort(createHeader(SWFTags.SHOWFRAME,0));
 
	i++;
}

This way I write all SWF headers the correct way and not like most other code out there which uses a precompiled SWF and replace the sound object.

Searching can be done by keyword or by regular expression!
Doc? provides two plugins, one for Flash and one for Eclipse (Flex, FDT etc..). These plugins send the selected text to Doc? and Doc? will search it's database for matching items.

I love it

http://www.airdoc.be

Screenshot with the PV3D ASdocs imported:

Papervion API in Doc?