Balrogg: Demonically compacting (up to 15%) lossless Vorbis/Opus recompressor

Balrogg is a lossless recompressor for Ogg Vorbis and Opus audio files that can reduce file sizes by 8-12% for .ogg files and 3-8% for .opus files. The tool supports batch processing with adjustable compression effort levels (-1 through -9), with higher levels achieving better compression at the cost of slower processing speed. It is open-source software licensed under GNU GPL v3 and available for multiple platforms including Windows and Linux.