PPC patches for Nightlong are at
Clickboom's download page.
Napalm and Myst are 68K only.
Freespace updates should be available from
Hyperion. Hopefully the previous owner didn't register that copy of Freespace, in which case you can just plug that code into your user account and gain access to the updates. If it has been registered, you can probably email them (Hyperion) to work something out.
