1. **本地音乐写入位置 ，** 写入元数据会影响做种，写入数据库必须有 mtw 提供的 subsonic 服务端播放才能显示。
2. **webdav 音乐写入位置**，网盘挂载在本地的目录，写入元数据会下载音乐后修改再上传回网盘，有较为频繁的操作，写入数据库，只会读取音乐文件的一部分内容就能读到元数据，然后存入 mtw 的数据库，使用提供的 subsonic 服务端播放才能显示。
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