OGG 转 FLAC
把 OGG 音频转成 FLAC，无损保存到 FLAC 音乐库里。
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OGG
A free, open audio format using the Vorbis codec. Popular in games and open-source software.
FLAC
Lossless compressed audio — CD quality at roughly half the size of WAV. The archival format of choice for music collections.