According to Waves 4.0 manual:

The Waves version 4.0 plug-ins support major Plug-In architectures and host
applications as follows :

MAC OS-9

WaveShell-DAE 4.0_9 - Provides compatibility with Digidesign systems from
Pro-Tools Free, through native power driven Pro-Tools LE and all the way to Pro-
Tools TDM using the MIX hardware generation or the new HD systems.
WaveShell-DAE integrates support for Digidesign’s 3 different plug-in types –
TDM, RTAS and AudioSuite. Waves users with Digidesign systems can read
important information in the DAE chapter.

WaveShell-VST 4.0_9 – Provides compatibility with some of the leading VST
host applications. Officially supported are –
Steinberg Cubase VST 5, NUENDO 1.5 | Emagic Logic Audio 4.7 | TC-Works
SPARK 2.0.| Bias Peak 2.62, V-Box 1.01, Deck 3 | Prosoniq – SonicWORX 2.
WaveShell-MAS 4.0_9 – Provides compatibility with MOTU – Digital Performer
2.72 and later and AudioDesk 1.02.

MAC OS-X

WaveShell-DAE 4.0_X - Provides compatibility with Digidesign systems from
Pro-Tools LE and all the way to Pro-Tools TDM using the MIX hardware
generation or HD systems.


WaveShell-DAE integrates support for Digidesign’s 3 different plug-in types –
TDM, RTAS and AudioSuite. Waves users with Digidesign systems can read
important information in the DAE chapter.

WaveShell-VST 4.0_X – Provides compatibility with some of the leading VST
host applications. Officially supported are –
Steinberg Cubase SX 1.05 | TC-Works SPARK 2.0.| Bias Peak 3, V-Box 1.01,
Deck 3.

So the first question is where to find Waves 4.0 for Mac Os 9. And the second question will be: How we can do with iLok authorization?