I wish we could have technology for you to remotely play stuff for me - and I could have these preferences setting things to give you feedback on what I like and don't like.
lol, i know. i tend to have very wide range of taste depending on day and how much time i have to do some exploring. even when i use to mess with cubase and fl studio i did wide ranges from classic compositions to large variety of electronic genres. haven't done anything for couple years though cause my creativity is poop now.
only thing i can think of is a specific forum search, like with advance search where type thread and then the user to find that specific user's posts, but then again it technically won't be a playlist. i try to think of something later!