Feature request: add .aac format support

[vauhnschlang]

Hello.
Is there a list of supported formats anywhere?
It does support mp3, but a half of my library is in .aac, which is not supported i guess.
Can i ask you to put a supported codec table into the readme and eventially add the .aac support?
Thanks

[aidewoode]

The audio metadata is handing by wahwah https://github.com/aidewoode/wahwah. So I created a issue in the repo of wahwah to address this: aidewoode/wahwah#52