This Cassette Tape Simulator Makes Your MP3s Sound Like You're Listening to a Retro Walkman

WebCassette will load and degrade your digital music files so their sound quality hearkens back to a time before compact discs hit the market.

from gizmodo http://www.gizmodo.co.uk/2018/04/this-cassette-tape-simulator-makes-your-mp3s-sound-like-youre-listening-to-a-retro-walkman/