just did a quick test and could not get it to work. AudioEngine node stays red and TTY shows this exception:
00:00:23 ERR : Exception occurred during creation of plugin: The composition produced a single composition error. The root cause is provided below. Review the CompositionException.Errors property for more detailed information.
1) Method not found: 'Boolean NAudio.CoreAudioApi.MMDeviceEnumerator.HasDefaultAudioEndpoint(NAudio.CoreAudioApi.DataFlow, NAudio.CoreAudioApi.Role)'.
Resulting in: An exception occurred while calling the 'OnImportsSatisfied' method on type 'VVVV.Nodes.AudioEngineNode'.
Resulting in: Cannot activate part 'VVVV.Nodes.AudioEngineNode'.
Element: VVVV.Nodes.AudioEngineNode --> VVVV.Nodes.AudioEngineNode --> TypeCatalog (Types='VVVV.Nodes.AudioEngineNode').
Resulting in: Cannot get export 'VVVV.Nodes.AudioEngineNode (ContractName="VVVV.PluginInterfaces.V1.IPluginBase")' from part 'VVVV.Nodes.AudioEngineNode'.
Element: VVVV.Nodes.AudioEngineNode (ContractName="VVVV.PluginInterfaces.V1.IPluginBase") --> VVVV.Nodes.AudioEngineNode --> TypeCatalog (Types='VVVV.Nodes.AudioEngineNode').
Resulting in: Cannot set import 'VVVV.Hosting.IO.PluginContainer.PluginBase (ContractName="VVVV.PluginInterfaces.V1.IPluginBase")' on part 'VVVV.Hosting.IO.PluginContainer'.
Element: VVVV.Hosting.IO.PluginContainer.PluginBase (ContractName="VVVV.PluginInterfaces.V1.IPluginBase") --> VVVV.Hosting.IO.PluginContainer
did a fresh install of b39 x64 + addonpack (nothing else) to verify if there is not an NAudio install i overlooked somewhere.