No specific info about version 1.1. Please visit the main page of Convert To AAC on Mac Informer.
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It can convert any audio book files on iTunes to MP3, WAV and AAC.
It can convert between nearly all HD/SD format videos.
It deals with .flac or .ape audio formats, common for classical music.
It can easily convert DRM-protected music and various audio files to unprotected MP3...
The program can encode any kind of sound file in AAC format.