So i am working on a project that i have cleaned up and removed some tracks and takes.  I also have several cwp files that i have made along the way for back-stepping if required due to pilot error or a bug that gets into a given cwp.
As a result i have a project folder full of lots of audio (and cwp) that i no longer use.
At this point, i am about to open my cleaned up cwp and write down a list of all the audio clips i am still using and delete the audio that i no longer use in the project - and then go into the 'audio' folder and remove the audio (not on that list) that i am no longer using.
Is there an easier/better way?  For example - is there a 'report' page in an open project with the meta data on clips actually in use?
TIA.
 
 

The easiest and safest way is to use "Save As" to a new location with "Copy all audio with project" enabled. This will create a new project folder copying only the files used by the currently open project.

Not sure which version of Sonar you are using ? . . . but there was a tool for this called Cakewalk Audio Finder, which was in the Utilities menu. It was helpful to find "orphaned" audio files that are no longer associated with any projects.
See if you have that anywhere on your system.

Ok.  awesome. Thanks guys for the quick answers. 

Isn't this what the Clean Audio Folder function is for?

I have not bothered with any utility since per-project audio folders were introduced. It also may not help much if there are multiple projects in the folder.

As pointed out, saving the project to a new folder with per-project folders enabled is the easiest way. Alternatively, CWAF Tool (Cakewalk Audio Finder) will show you what project uses which audio files and vice versa; it's far more flexible and powerful than Clean Audio Folder. Clean Audio will only get you what you want if there are no alternate versions of project anywhere on the system that reference the files not used in the current project, and you'll have to wait for it to search the whole system for such projects.

There's also a simple command in Sonar when the project is open: Project->Audio Files.
 
But ... depending on whether you have ever saved copies, or created more projects that use the same audio folder, the only safe way, as Brundlefly notes, is the CWAF, which can be found inside Sonar in Utilities.
 
CWAF shows you which files are orphaned, missing, or 'referenced'. Click on any 'missing' or 'referenced' audio file, and CWAF will show you which projects use it.