Pro Audio Converter 4+

Pro Audio Converter is an application for converting between a variety of audio file formats. It is multi-threaded and will batch convert multiple files at once to multiple formats at once. It supports reading and writing metadata and can create custom output file paths based on the metadata. It can also edit the metadata of existing audio files without the need to re-encode, functioning as a basic tag editor. Pro Audio Converter also gives you the option to add your converted files to iTunes.

Pro Audio Converter currently can read and write the following formats:
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3GP Audio
3GPP-2 Audio
AAC
AIFF
AIFC
Apple Lossless
Core Audio Format
FLAC
Monkey's Audio
MP3
NeXT/Sun
Ogg Vorbis
Ogg Flac
Ogg Speex
Opus
Sound Designer II
True Audio
WAVE


Pro Audio Converter can also read (but not write) the following formats:
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DSD/DSF
DSD/DFF
WavPack
Musepack
Module Files
Real Audio
Real Media
Windows Media Audio

*DRM protected files of any kind are not supported.