通常，当您从非官方来源下载音乐时，它没有元数据和专辑插图(album artwork)。元数据(Metadata)也可能由于各种其他原因而丢失，例如当您将文件从一种格式转换为另一种格式时，但转换器没有(converter doesn)携带所需的标签。
这个元数据实际上是允许您的音乐播放器应用程序(music player apps)组织您的文件的原因。当您的文件缺少此信息时，它们会保持无组织状态，使您难以筛选文件。
解决此问题的方法之一是编辑文件的 MP3 元数据(edit the MP3 metadata of your files)。这样，您可以在每个音乐文件中添加缺失的信息，并使用各种过滤器使其可搜索。有很多应用程序可以标记MP3(MP3s)，您可以使用其中任何一个来编辑文件的元数据并添加缺失的信息。
MusicBrainz Picard是一个多平台的开源工具，可让您轻松地将元数据添加到您错过的音乐文件中。(music file)它支持几乎所有可用的音乐文件(music file)格式，因此您的文件不一定必须是MP3 格式(MP3 format)才能编辑元数据
它使用称为AcoustID的东西来帮助它通过内容而不是其他元字段来识别您的音乐文件。因此，即使您的MP3(MP3s)的可用数据为零，您也可以使用该工具添加缺失的信息。
MP3Tag（免费）( (Free))
MP3Tag是一款流行的标记MP3(MP3s)的应用程序，它也支持批处理(batch processing)。这意味着如果您的计算机上有许多没有任何元数据的音乐文件，您可以将它们全部加载到此工具中，让它为您查找并添加所需的元数据。
它会查找各种在线数据库以查找所需的信息和专辑插图(information and album artwork)，并将其添加到您的文件中。它甚至可以让您根据标签信息重命名您的 MP3 文件。(rename your MP3 files)
Frigate3实际上是一个文件管理器(file manager)，但它还具有各种其他功能。其中一项功能可让您查看和编辑 MP3 元数据(view and edit MP3 metadata)。您基本上需要导航到MP3文件所在的文件夹，单击其中任何一个，然后在右侧窗格(side pane)中打开一个窗口以添加缺少的信息。
除了让您编辑MP3 元数据(MP3 metadata)外，它还可以让您查看其他信息，例如 MP3 的比特率和帧数。
如果您要向多个MP3文件添加元数据，The (MP3)GodFather可以使用其(GodFather)批处理模式(batch processing mode)帮助您轻松完成。它甚至支持非MP3文件的各种标签格式，帮助一次更新所有标签，让您使用替换矩阵(replacement matrix)，如果您愿意，还允许您一次删除所有标签。
该工具适合那些想要一次更新多个MP3文件的元数据的人。它使您的工作变得更加轻松。
ID3 Tag Editor是一个支持Unicode的应用程序，用于标记MP3(MP3s)，您可以使用它来将缺失的元数据值添加到各种语言的文件中。它还允许您为 MP3 文件添加封面(add a cover art to your MP3 files)，该文件仍嵌入在主文件本身中。
其他功能包括向文件添加自定义注释、一次删除所有标签以及与 32 位和 64 位版本的Windows兼容。
大多数允许您编辑MP3 元数据(MP3 metadata)的应用程序都使用手动方法来完成任务。Music Tag与那些应用程序不同，它可以让您自动下载缺失的元数据并将其添加到您的音乐文件中。要使用该应用程序，您基本上需要做的就是给它您的MP3文件，它会下载所需的信息并将其添加到您的所有MP3文件中。
这样，它比其他应用程序更快，并且可以立即完成工作。此外，它还能识别超过 3500 万首音乐曲目，并且您的文件很可能包含在此处。
如果您喜欢Excel电子表格，您一定会喜欢TigoTago 应用程序(TigoTago app)来标记您的MP3(MP3s)。它使用类似电子表格的格式让您编辑和添加新信息到您的MP3文件。您对文件所做的任何更改在实际应用到您的文件之前首先对您可见。
它对于大量标记任务很方便，并且几乎不需要输入，因为大部分数据都是从在线数据库中获取的。
EasyTAG是适用于(EasyTAG)Linux 和 Windows(Linux and Windows)的功能丰富的程序，可帮助您编辑音频文件的元数据部分(edit the metadata part of your audio files)。它允许您查看、读取和编辑文件元数据的任何部分。您还可以一次将单个更改应用于所有MP3文件。
它具有易于使用的界面，并提供多种语言版本。
Kid3（免费）( (Free))
Kid3既是MP3 元数据(MP3 metadata)编辑器，也是标签转换器(tag converter)，可帮助您将标签转换为多种格式。您可以使用它来标记几乎所有的音频文件(audio file)格式，包括MP3，从文件名生成标签，并从在线数据库中导入数据以添加到您的文件中。
它还带有一个命令行界面，可帮助您从命令提示符窗口(Command Prompt window)使用它并自动执行一些任务(automate some of its tasks)。
Metatogger可以帮助您编辑MP3文件中的现有标签并清理这些标签中的任何垃圾内容(junk content)。当您开始使用该应用程序时，您可以选择手动模式或使用 C# 脚本来加速该过程。它还允许您按标签内容组织文件，这是许多其他标签编辑器不提供的。
它使用声学指纹技术(fingerprinting technology)识别您的音乐文件，并从各种在线数据库下载所需的数据。
10 Best Tools to Tag MP3s and Edit Metadata
Often when you download yоur music from unoffiсial sourcеs, it comes with no metadata and no аlbum artwork. Metadata can gеt lost due to various other reasons as well, such as when you convert your files from one format to another but the converter doesn’t carry over the required tags.
This metadata is actually what allows your music player apps to organize your files. When your files lack this information, they remain unorganized and make it difficult for you to filter through your files.
One of the ways to fix the problem is to edit the MP3 metadata of your files. This way, you can add the missing information in each of your music files and make them searchable using various filters. There are plenty of apps to tag MP3s and you can use any of them to edit your files’ metadata and add in the missing information.
MusicBrainz Picard is a multi-platform open-source tool that lets you easily add metadata to your music files that miss them. It supports almost all the music file formats available out there and so your files don’t necessarily have to be in MP3 format in order to edit the metadata
It uses something called AcoustID that helps it identify your music files by their contents and not their other meta fields. So even if your MP3s have zero data available, you can use the tool to add the missing information.
MP3Tag is a popular app to tag MP3s and it supports batch processing as well. That means if you have a number of music files sitting on your computer without any metadata, you can load them all into this tool and let it find and add the required metadata for you.
It looks up various online databases to find the required information and album artwork and adds that to your files. It even lets you rename your MP3 files based on the tag information.
Frigate3 is actually a file manager but it has various other features as well. One of these features lets you view and edit MP3 metadata. You basically need to navigate to the folder where your MP3 files are, click on any one of them, and you have a window open on the right-hand side pane to add the missing information.
Besides letting you edit MP3 metadata, it lets you view other information as well such as the MP3’s bit-rate and the frame numbers.
If there are several MP3 files that you want to add metadata to, The GodFather can help you do it with ease using its batch processing mode. It supports various tag formats even for non-MP3 files, helps update all the tags at once, lets you use the replacement matrix, and also allows you to delete all the tags at once, if you want to do it.
The tool is suitable for those of you wanting to update the metadata of a number of MP3 files at once. It makes the job a whole lot easier for you.
ID3 Tag Editor is a Unicode supported app to tag MP3s and you can use it to add missing metadata values to your files in various languages. It also lets you add a cover art to your MP3 files which remains embedded in the main file itself.
Other features include the ability to add custom comments to your files, remove all the tags at once, and compatibility with both 32-bit and 64-bit versions of Windows.
Most apps that let you edit MP3 metadata use manual methods to do the task. Music Tag is unlike those apps and lets you automatically download and add missing metadata to your music files. To use the app, all you basically need to do is give it your MP3 files and it’ll download the required information and add it to all of your MP3 files.
This way it’s quicker than the other apps and gets the job done in no time. Also, it recognizes over 35 million music tracks and it’s highly likely your files are included here.
If you like Excel spreadsheets, you’re going to love the TigoTago app to tag your MP3s. It uses a spreadsheet-like format to let you edit and add new information to your MP3 files. Any changes you make to your files are first visible to you before they’re actually applied to your files.
It’s convenient for mass-tagging tasks and requires almost no typing as most of the data is fetched from online databases.
EasyTAG is a feature-rich program for both Linux and Windows that helps you edit the metadata part of your audio files. It lets you view, read, and edit any part of the metadata for your files. You can also apply a single change to all of your MP3 files at once.
It has an easy to use interface and is available in multiple languages.
Kid3 is both an MP3 metadata editor and a tag converter to help you convert your tags into multiple formats. You can use it to tag almost all the audio file formats out there including MP3, generate tags from file names, and import data from online databases to add to your files.
It comes with a command-line interface as well to help you use it from a Command Prompt window and to automate some of its tasks.
Metatogger helps you both edit your existing tags in your MP3 files and clean-up any junk content in these tags. As you start using the app, you can go for either the manual mode or with C# scripts to speed-up the process. It also lets you organize your files by their tags content which is something not offered by many other tag editors.
It identifies your music files using the acoustic fingerprinting technology and downloads the required data from various online databases.
