Yout - YouTube to Mp3 Converter
KlickAud - Klickaud is a free web-based application to online download SoundCloud track, music, songs in MP3 formats.
CONV. - Convert YouTube video to MP3, GIF or MP4
SoundCloud to MP3 - SoundCloudToMP3.me is a great online service for downloading and converting soundcloud to MP3 files.
SoundCloud Go - Your favorite music and new discoveries, offline and ad-free
Anything2MP3 - Anything2MP3 is a free online SoundCloud and YouTube to MP3 transformation device which permits you to change over and download SoundCloud and YouTube recordings to MP3.