This article explains how to manage your music and album covers for the music application on Firefox OS.

How it Works

Every music file uses tags to define what it is. There are a few types of tag that are important as for using the music app:

• Title (includes the title of the track shown in the music app)
• Album (includes the name of the album shown in the music app)
• Artist (includes the name of the artist shown in the music app)
• Cover (includes the image file of the cover art shown in the music app)

What to Do

If your tags are not managed the way you want them to be, you can easily edit them using an mp3 tagger. You can use MP3tag or any other mp3 tagger of your choice for this task.

1. Install the mp3 tagger software.
2. Open the folder your music is located in.
3. Edit the tags like shown below.
   
   If you don't have an image to use as a cover I suggest to enter the album name on Google Images and download the desired image file. Supported image formats are PNG and JPEG.
   Note: Every track can have it’s own cover, but the cover of the track tagged as first in the album is used as the cover shown in the album gallery.
   
   Warning: Make sure to use a square image, because else it gets scaled to fit the square frame and that may not look very good. That means it should be the same width as height. For example image size 500x500.
4. Save your changes. You can also exit the mp3 tagger once finished.
5. Disconnect the device from your computer, because you're not able to use the music app while being connected.

And you are all done!
It should be looking something like this.
The image "album gallery no default covers" does not exist.