You don't have to join. You don't have to pay. Just stop by and listen. I recently added three new mixes on my 8tracks.com site: each of these three (Blues: Volumes 2, 3, and 4) provides over one hour of choice blues tracks. (My "Blues, Vol. 1" mix has over thirty minutes of great music.)
If you skip through too many songs, you'll run up against a wall concerning the rules and permissions for 8tracks.com. Here's the text that pops up once you've skipped too many songs: "Apologies for the inconvenience, but our music license requires us to limit the number of tracks you may skip each hour." But you're not being shut down at that point, and you're not being asked to sign up or spend money. Just keep listening, and a new song will be playing soon.
It's a pleasure to play DJ, to share these great works of art. Enjoy.