Sonnox Fraunhofer Pro-Codec, Codec Plug-in (download), Real-time encoding and decoding of audio material for quality control without time-consuming rendering, Five codecs can be used at the same time, Included codecs: mp3, Apple AAC iTunes + (Mac only) AAC-LC, HE-AAC, MPEG Surround, AAC-LC & HE-AAC multichannel, HD-AAC, DIFF monitoring to monitor the difference between the original and encoded signal, Central display with numerous metering options, Manager program for Batch processing with extensive editing options for Metadata