I would love to extend an old Java application [dump3](http://dump3.sourceforge.net/) that identifies potential duplicate mp3 files by calculating audio fingerprints. From what I can tell rooting through the code, it handles any audio format that can be converted via a registered [FormatConversionProvider](http://docs.oracle.com/javase/7/docs/api/javax/sound/sampled/spi/FormatConversionProvider.html).
Finding anything that plays the more modern iTunes default mp4 files through Java took some googling, I ended up with [JAAD](http://jaadec.sourceforge.net/) and [jffmpeg](http://jffmpeg.sourceforge.net/). I even looked at the Java bindings for VLC. Great, I can play audio. But none seem to support a FormatConversionProvider! Does anyone know how to plug tab A into slot B and enable a FormatConversionProvider for mpeg-4 audio?
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