Hello,
There are at latest 5 ways to record Spotify songs as MP3.
1. Sidify Music Converter for Spotify (Windows & Mac)
2. Convert Spotify to MP3 with Chrome Plug-in – Deezify
3. Convert Spotify to MP3 Online – spoty-mp3.com
4. Streaming Audio Recorder (Windows & Mac)
5. iMusic (Windows & Mac)
Source:
2017 Top 5 Ways to Convert Spotify to MP3 Effectively