So, Nightswimmer is assuming that there's a contract that governs CD or other media release of these 1960 European radio broadcasts, and you're assuming that if there is a contract, it was made under duress and without legal counsel and therefore is void. Both assumptions are likely wrong. The truth of the matter is likely that it is perfectly legal to release, in Europe, a radio broadcast that was recorded and done in Europe, even before expiration of the 50-year copyright term, so long as the public broadcaster authorized the release. I'm not a lawyer in Europe, but that's my understanding. When this box set was legitimately released in Europe, in 1994, that copyright period had not yet expired, but it didn't matter, because the release was authorized and fully above board under applicable law. Now, whether that release that is lawful in Europe may be imported to and sold in the US lawfully, that's a separate issue, and I don't know.