Local File Sync

[mm2221]

Plan

Free/Premium

Country

Device

(iPhone 8, Samsung Galaxy 9, Macbook Pro late 2016)

Operating System

(iOS 10, Android Oreo, Windows 10,etc.)

My Question or Issue

I just want to be able to listen to four songs that aren't available on Spotify, but the file sync isn't working. I've uploaded the local files on desktop, added them to three different playlists, connected my computer and phone to the same wifi network, made sure they are both up to date, current firmware, supported file types, etc. I've toggled download for the playlists from both desktop and mobile, and the download icon appears by the songs, but they are still grayed out. I've even moved the downloaded songs to a separate folder on my computer, and uninstalled and reinstalled Spotify mobile.

tl;dr: I've done everything recommended (except the iTunes thing) and none of it has worked.