In any case the license to use our sounds is granted to a single person who cannot transfer the license.
OK, so if a library is re-sold, the second buyer must buy the used media and keys directly from you, and not from the previous purchaser (i.e. these products will never be sold on places like eBay). So, I guess we can say that VSL libraries are going to remain essentially not transferable, except in some very special circumstances, with very specific policies and procedures for resale. Since VSL is internationally distributed with a local dealer structure, I can imagine that any kind of transfer would be a very complicated transaction. The decision on when to allow a transfer would most likely need to be made in Austria, then the software and keys would have to be sent to the local distributer. The local distributer would have to cut the check to the original purchaser, check, test and repackage the used content, and then complete the transaction with the new buyer. Sounds like it would be quite a PITA.
I actually approve of this policy. Making the libraries freely transferable would mean that fewer copies would be sold, so the price per copy that you'd have to charge would be higher.
Lee Blaske