RE: Zildjian, we don’t have the rights to the recordings any longer which is why the packs aren’t on sale with us anymore. However if you have a registration for them, you can get the newest installers and authorize those packs.
Ergo - if you can find a copy elsewhere, and then get in touch with myself (or preferrably tech support since I’m properly snowed under at the moment!) to get a replacement serial, you should be all good to go after that.