FLAC 转 AAC
把无损的 FLAC 文件转成体积紧凑的 AAC 音频，适合手机和流媒体使用。
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FLAC
Lossless compressed audio — CD quality at roughly half the size of WAV. The archival format of choice for music collections.
AAC
Raw AAC audio — MP3's successor, used in streaming and broadcasting. Efficient, but fewer apps open bare AAC files.