选择文件适合快速加入一首或少量音乐；选择文件夹会建立一个曲库入口并扫描其中的音频。是否继续扫描子文件夹由导入区的“包含子文件夹”选项决定。不同浏览器提供的文件夹能力不同，支持 File System Access API的浏览器以文件夹打开方可解锁完整体验。功能受限时仍可退回临时播放。

文件访问权限由浏览器保存和恢复，而不是由播放器绕过系统长期持有。重启浏览器、使用隐私模式、清理站点数据、浏览器策略变化，或移动和重命名文件夹，都可能让原授权失效。重新选择同一目录只是恢复访问关系，不会复制或上传目录内容。

不会因为“选择文件”或“选择文件夹”而自动上传。本地音频由浏览器直接读取并播放。在线媒体、在线歌词或其他网络来源可能各自发起网络请求，但这与本地导入是不同的数据路径。

扩展名只说明文件声称的格式，真正能否播放还取决于音频编码、文件是否损坏，以及当前浏览器和系统提供的解码器。同一种容器也可能装入不同编码。可以先查看兼容性检测的格式声明，再用其他已知正常的音频交叉验证。

歌单、设置、文件句柄与离线资源都可能保存在浏览器的站点存储中。清理站点数据、重装浏览器配置或使用临时会话，可能一并删除这些资料。重要歌单与配置应定期从设置页的本地数据区域导出备份；备份不包含音乐文件。

歌单、设置备份导入受支持版本后数据生效。本地音乐文件句柄无法被导出，导入备份到新应用程序需要重新授权与备份目录名称一致的音乐文件夹，期间不宜修改文件夹内音乐名称和路径，歌单根据音乐相对路径确定以有效迁移，歌单中本地灰色音乐文件灰色可请检查对应根目录是否正确添加。

支持输出设备专用选择 API 的浏览器会在点击刷新按钮时直接请求输出设备授权，不申请麦克风。其他浏览器会先尝试无权限枚举；只有输出设备名称仍被隐藏时，才会一次性请求临时麦克风权限来解锁设备列表。MiuPlayer Box 取得结果后会立即停止临时音频轨道，不使用麦克风。若浏览器拒绝输出设备授权，设备切换仍可能受限。

不一定。安装只表示应用可以像独立窗口一样启动；离线可用依赖 Service Worker 是否控制当前页面、所需资源是否已经缓存，以及缓存是否被系统回收。首次使用或版本切换后，可关闭应用重新后再次打开确认离线资源状态。

歌词来源可能依赖文件内嵌信息、同名歌词或在线匹配；不完整的标题、艺人和时长会降低匹配准确度。先检查音乐元数据和歌词来源，再手动替换或校正歌词。逐词时间轴本身有误时，需要在歌词工具中重新调整。噢！内置歌词忘记做兜底显示了，下次记得再加吧。。。

页面转换器只做基本格式转换处理，适用于快速转换。需要手动保存同名`.lrcx`。
好消息！！🎉在线转换服务现已可用：LRC to LRCX服务。支持自动批量转换、增加日语注音上标，可自动写入歌词文件。

播放列表突然就不见了？如果不喜欢可以在 设置-播放控制 中关闭播放队列“自动展开/收缩”设置项。不过播放队列按钮处于视觉出让仍会自动消失，该设计会后续会考虑优化。 记忆按钮位置很奇怪，你是对的，但播放队列面板自动收缩是本播放一项特色细节，鼠标靠近右侧响应区域自动浮出，随鼠标停留、隐藏，也许你可以试试；

“可用”：当前环境暴露了预期能力或已确认相应状态；“受限”：存在回退方案、尚未获得持久状态，或只能确认 API 入口；“不可用”：当前检测没有发现所需入口。检测不会主动申请权限，也不能保证每个文件、设备和系统策略都成功，请结合实际操作判断。

Choosing files is useful for quickly adding one track or a small selection. Choosing a folder creates a library entry and scans it for audio. The “include subfolders” option decides whether that scan continues into nested folders. Folder support varies by browser; browsers with the File System Access API provide the full folder-based experience, while limited environments can fall back to temporary playback.

The browser stores and restores file permissions; the player cannot bypass the system and keep permanent access by itself. Restarting the browser, using a private session, clearing site data, changing browser policy, or moving or renaming the folder can invalidate a previous grant. Selecting the same folder again only restores that relationship—it does not copy or upload its contents.

No upload happens automatically when you choose files or a folder. The browser reads and plays local audio directly. Online media, online lyrics, or other network providers may make their own requests, but those use a different data path from local import.

A filename extension only says what the file claims to contain. Playback also depends on the audio codec, file integrity, and the decoders supplied by the browser and operating system. The same container can hold different codecs. Check the format declarations on the compatibility page, then compare with another file that is known to work.

Playlists, settings, file handles, and offline resources may all live in browser site storage. Clearing that storage, rebuilding a browser profile, or using a temporary session can remove them together. Export important playlists and configuration regularly from the Local Data area in Settings. A backup does not include the original music files.

After importing a playlist and settings backup into a supported version, the data becomes available. Local music file handles are not included in exports. When restoring in a new installation, grant access again to the music folder whose name matches the one in the backup. Avoid renaming or moving files inside that folder during migration: playlists locate local tracks by their relative paths. If a local track appears grayed out in a playlist, check that its root folder has been added correctly.

Browsers that provide a dedicated output-device picker use it when you click the refresh button, so microphone permission is not needed. Other browsers are queried without permission first; microphone access is only requested as a legacy fallback when output-device names remain hidden. MiuPlayer Box immediately stops the temporary audio tracks afterward and does not record. If output permission is denied, device names or switching may remain limited.

No. Installation means the app can launch in its own window. Offline use also depends on whether a Service Worker controls the page, whether required resources have already been cached, and whether the system has reclaimed that cache. After first use or a version change, close and reopen the app to confirm its offline-resource state.

Lyrics may come from embedded metadata, a matching local lyric, or an online match. Incomplete title, artist, and duration data reduces matching accuracy. Check the track metadata and lyric source first, then replace or correct the lyric manually. If word-level timing is wrong, adjust it with the lyric tools. The built-in lyric fallback is not in place yet, but is planned for a future update.

The page converter handles basic format conversion for quick use. Save the result manually as a .lrcx file with the same name.
Good news! 🎉 The online converter is now available: LRC to LRCX Service. It supports automatic batch conversion, adding Japanese ruby annotations, and writing the converted lyric file automatically.

Did the playback queue suddenly disappear? If you prefer, go to Settings → Playback controls and turn off “Automatically expand and collapse the playback queue.” The queue button can still auto-hide even when this setting is off; this behavior may be improved later. The button's placement is admittedly odd, but automatic queue collapse is one of this player's signature details: move the pointer near the activation area on the right to reveal the panel; it hides again as the pointer moves away. Give it a try.

“Available” means the expected capability is exposed or its relevant state was confirmed. “Limited” means a fallback exists, persistence has not been granted, or only the API entry point can be confirmed. “Unavailable” means the current check did not find the required entry point. The check never requests permission and cannot guarantee that every file, device, or system policy will work; confirm the result with the actual task.