Have Windows Media Player 12?
If you have the later version Windows Media Player 12, you can check out the tutorial on how to add and remove music from Windows Media Player 12.
You can visit the Microsoft site to download the latest version of Windows Media Player.
Navigating the Library Menu
Having clicked on the Library tab, you will now be in the library section of Windows Media Player (WMP). Here you will see playlist options in the left pane as well as categories such as artist, album, songs etc.
To start adding music and other media types to your library, click on the small down-arrow icon which is situated underneath the library tab at the top of the screen.
A drop-down menu will appear giving you various options. Click on Add to Library and make sure your media type is set to music as in the example screen shot.
Choosing Your Media Folders
Windows Media Player gives you the option to select what folders you want to scan for media files — such as music, photos, and videos. The first thing to is check to see if you are in the advanced options mode by looking for the Add button. If you can’t see it then click on Advanced Options to expand the dialog box.
When you see the Add button, click on it to start adding folders to the monitored folders list. Finally, click on the OK button to begin the process of scanning your computer for media files.
Reviewing Your Library
After the searching process is complete, close the search dialog box by clicking on the close button. Your media library should now be built and you can check this by clicking on some of the options on the left pane. For example, selecting artist will list all the artists in your library in alphabetical order.
1. To add media files to your Windows Media Player library, select the file(s) you would like to add and then right-click. Select "Add to Windows Media Player list". The files should then appear in your Windows Media Player playlist.
2. Alternatively, you can try the following to add files: Open Windows Media Player. Locate the file(s) you would like to add to your library. Select the file(s) then hold the left-button down to drag them to the area denoted below.
If you have additional questions about how to add files to your Windows Media Player library, please visit the Windows Media Player knowledge base here.
*Information from Lifewire.com
Click , then Settings.
Scroll down to Local Files and switch Show Local Files on.
Any files in your computer's My Music and Downloads folders are automatically selected. Switch off any sources you don't want Spotify to access.
Click ADD A SOURCE to select another folder.
You’ll now find music from that folder in Local Files in the menu on the left.
Supported file types:
.m4p (unless it contains video)
.mp4 (if QuickTime is installed on your computer)
Note: The iTunes lossless format (M4A) is not supported.
Adding Local Music to the Desktop Client
First, make sure the song or songs you want to add are properly synced up in your desktop client and have been either recorded yourself, or you own the DRM rights to share it among multiple devices. Any songs with DRM restrictions will not be able to sync with the Spotify service and will only open in media players that are designed to put in DRM requests with central servers.
For Windows users, Spotify will automatically scan your Downloads, Documents, and Music folders for any potential tracks that might be stored on the machine. Mac users will need to load any files they want into their iTunes, My Music, or Downloads folder if they expect the service to catch them on its own. Any other folders can be added by going into Preferences, scrolling down to “Local Files” and clicking “Add a Source”, near the bottom.
With the folder added, any non-DRM restricted music contained within will be immediately imported into the Spotify library, found under the “Local Files” tab in the main menu tree.
Create a New Playlist
Once you’ve added the music to your desktop’s library, you’ll need to create a new playlist to put it into. As an example, we’ve created a new playlist with the name “Synced”, with the song “Step Inside” by Rameses B by clicking the “New Playlist” button down in the bottom left-hand corner of the Windows desktop client.
Once the playlist is ready, jump back over to the Local Files tab, and add the song you want synced to the playlist you intend on streaming from.
Sync to “Play Offline”
You can do this either on your phone/mobile device or in the desktop client itself, but either way once you have all your local files linked to a playlist that you can access across each of your connected devices, toggle the “Play Offline” switch in the top right hand corner, seen here:
Be sure that when you activate the toggle, both your desktop and the device you wish to sync to are both on the local WiFi network. Spotify will attempt to communicate licenses and DRM requests over this protocol, and the system won’t let you sync anything unless both are tied to the same wireless MAC address.
This process can take anywhere from 30 seconds to several hours, depending on the size of your playlist and the fidelity of the songs inside. Once complete, you’ll now be able to access your local files on any devices which are registered to your account, as well as mix them up with as many songs as you’d like from Spotify’s streaming archive to create one of a kind listening experiences of your very own!
Adding music to Apple Music:
Please reach out to Apple for more information on how to add your local music files to Apple Music.