But as the title says I'd like to add my own beloved local files to the "Your Music". I don't see why this shouldn't be a possibilty. This way I don't need to have one master playlist, I can just have all the music I like under "Your Music -> Songs".
Also, as suggested earlier, changing the font size could be usable to many people.
Thanks for bringing us your feedback in the Spotify Idea Exchange.
We're marking this as a 'Good Idea'.
Please know your feedback is reaching the internal teams at Spotify, and they're aware of the votes around this idea. We'll continue to check out the comments here, too.
In the meantime there's a workaround we can suggest to ultimately get Local Files added to your Liked Songs on a mobile device:
First, add your personal music collection using the recently updated Local Files feature (Android/Desktop how to, iOS how to) where they'll appear in Local Files. You can then add them to your playlists. Just right click > add to playlist.
Once your track is discovered on your mobile app, Once your track is discovered on your mobile app, you'll be able to tap the heart icon to add it to your Liked Songs as you would any other track. Keep in mind, that it is currently not possible to add Local Files to Liked Songs on the desktop app.
We know it's not ideal, but hope that it will be useful for some of you.
If there are any new updates, rest assured we'll let you know,