The following files are downloadable directly from this site thanks to the authors:

Gordon Miller's Shades v2.3 for OSX

A wonderful collection of free procedural shaders that now work under OSX. You must also load the Legacy Plugins for 7.5 that are downloadable from Newtek's site here. Gordon has been running the Shades project since September 1999 having taken on the project from Marvin Landis. The Shades plugin provides a huge range of spectacular surface shaders and is an essential download.

CTBfproc for OSX

A very sophisticated interface into cellular procedural textures based on a paper by Steve Worley written by Marvin Landis and ported by Gordon Miller to OSX. CTBfproc information can be found on Marvin's site here.

The existing 5.6 File Types are here (and are applicable to L7.5) - along with some free downloadable Autotypers(thanks to Daniel Azuma, the creator of FileTyper 5.4). I can't seem to get a handle on the Type and Creator codes for LW Surfaces, LW Envelopes, HV Settings, Particle Storm Projects and Gizmo files. If anyone can fill me in on these (and any more you can think of) I'd be grateful. Although these all seem to work on my machine...I cannot be held responsible (fill in your own legal disclaimer)...etc.

If you'd like to change your type and creator codes via a contextual menu in OS9, you could try Typeschange.