I think it's much more likely he was smuggling vinyl, unless the smuggling was also done via a time machine, but I get your point! My wife (Estonian) had an uncle who was a respected yachtsman during the Soviet occupation, and who invariably came back from his trips with lots of 'subversive' albums. It put a different perspective on music I'd had ready access to growing up in Australia, for example Genesis' 'Invisible Touch' - I remember biking to the record store and buying it with (obvious) great ease and some pleasure. My wife told me this album was one she heard after her uncle smuggled it into Estonia, and it was copied by her Dad onto open-reel tape. The story behind the 'how and when' of hearing the music really brought home the difference between being part of the USSR and not.