Just returning to my wandering topic post a little way up - if I want to degrade the music to lo-fi mono I can do it myself - easy, just put it through a graphic with all the bass and treble rolled off, close the door, and listen from the next room while running the vacuum cleaner. Easy.

Actually, come to think of it, I do recall some blues revival group who wanted to release their music on 78... (possibly apocryphal...)