Initial release. This tool designed to convert MIDI to MP3, WMA, WAV, OGG, APE, FLAC, AMR directly.
Direct rendering allows you to convert MIDI files 100x faster when real time.
1. Added optimizations for multi-core CPUs. Audio Converter 4.0 can use up to four CPU cores during audio conversion.
2. Added FLAC encoder.
3. Added APE encoder.
4. GUI redesign.