REQ: Support CAF and multi audio convert

[eve93100]

Hi, I'd like you to add support for CAF (Core Audio Format). Some instruments in Logic Pro with the . exs extension use audio files in CAF format. There's official Apple documentation on this. Audacity supports the format, although you need to install FFmpeg for it to work. I understand the format uses AAC audio, based on what I saw in the Audacity forum.

https://developer.apple.com/library/archive/documentation/MusicAudio/Reference/CAFSpec/CAF_overview/CAF_overview.html
https://forum.audacityteam.org/t/caf-conversion/33201/2
https://forum.audacityteam.org/t/open-core-audio/46134/7
https://github.com/BtbN/FFmpeg-Builds

I hope the attached documentation is useful.

Additionally, it would be nice if the Sample Files format conversion feature could convert all the formats supported by the program to all formats, not just WAV. For example, WAV to AIFF, or AIFF to FLAC, because commercial format converters don't always support all formats, and if they do, it's at limited quality.
Thank you.