Have a project open and created some audio files that have gone to the correct project location and sit in the audio file. Should mention I have saved project after deleting unwanted files. As I no longer require those audio files I go to Utilities - Clean Audio Folder as below (Would be better if it said Clean Project Audio Folder).  OK I would assume that as no audio files are showing that I have to press find? When I do just that, it starts to search all my hard drives rather than go directly to to the indicated audio path. Help am I missing something as this is a really big time waster? Oh and yes I can see those files in the Project Audio File so why does Sonar have to go and search through three hard drives?
 

I should mention it completely froze up when I hit the close button to stop it searching which maybe another issue. 
 

Just done it... 
 
http://www.cakewalk.com/Documentation?product=SONAR%20X2&language=3&help=FileManagement.9.html#1117186
 
"
Click the Find button. SONAR searches the selected directory for audio files that appear to be unused by any existing projects, and displays the names of these files in the list.
SONAR searches the entire system for project files. Audio files in the folder or folders you decide to search which do not belong to any of the projects on your system appear in the Clean Audio Folder dialog box. If any corrupted or unreadable project files exist on your system, the Unreadable Files dialog box appears. It is very important that you restore any unreadable files from a backup before continuing, otherwise you risk data loss.
"
 
 
It then showed me a load of unreadable files, what was really frustrating is that the windows was too small for me to identify exactly what the files were.
 

 
Before it states I can safely delete the files by pressing "delete" but there is no delete option as you can see above, or through the parent window.

Probably the easiest way to clean up your project is to do a "Save As" to a different location, making sure that "Copy Audio With Project" is checked.
This will only copy the audio files currently associated with the project and will not copy and redundant files.
 
Now you can safely delete the original and gain a whole heap of disc space.
 
I like to save it to a folder similarly named to the original so that it's easy to find, so as an example, "Song 23.4" becomes "Song 23.4 Clean"

CakeAlexS
Just done it... 
 
http://www.cakewalk.com/Documentation?product=SONAR%20X2&language=3&help=FileManagement.9.html#1117186
 
"
Click the Find button. SONAR searches the selected directory for audio files that appear to be unused by any existing projects, and displays the names of these files in the list.
SONAR searches the entire system for project files. Audio files in the folder or folders you decide to search which do not belong to any of the projects on your system appear in the Clean Audio Folder dialog box. If any corrupted or unreadable project files exist on your system, the Unreadable Files dialog box appears. It is very important that you restore any unreadable files from a backup before continuing, otherwise you risk data loss.
"
 
 
It then showed me a load of unreadable files, what was really frustrating is that the windows was too small for me to identify exactly what the files were.
 

 
Before it states I can safely delete the files by pressing "delete" but there is no delete option as you can see above, or through the parent window.

 
And? LOL. Are you confirming that that is how it is or that I am missing something? Best not answer that :-(
I suspect that something is woefully wrong or long winded here but only using Platinum for a couple of hours I could be missing something. Keep it simple Alex please.

Bristol_Jonesey
Probably the easiest way to clean up your project is to do a "Save As" to a different location, making sure that "Copy Audio With Project" is checked.
This will only copy the audio files currently associated with the project and will not copy and redundant files.
 
Now you can safely delete the original and gain a whole heap of disc space.
 
I like to save it to a folder similarly named to the original so that it's easy to find, so as an example, "Song 23.4" becomes "Song 23.4 Clean"

 
That is a work around but let's be honest deleting unused audio files from a project should be simple. It is essential and basic to good housekeeping and not cluttering up your HD with unwanted audio files. Do I do a feature request?

I used Clean Audio Folder once and it deleted all of my client Sonar files (including audio) that were stored on two drives separate from my Sonar drive. Took the main files and the backups. I haven't used it since because frankly, it scares the hell out of me!

It's a perfect example of a tool written by a developer with no input from the UX team.

Hence why I've never used it and always used the "workaround" detailed above, which is utterly foolproof.

southpaw3473
I used Clean Audio Folder once and it deleted all of my client Sonar files (including audio) that were stored on two drives separate from my Sonar drive. Took the main files and the backups. I haven't used it since because frankly, it scares the hell out of me!

LOL ! Good one Southpaw ... it scares the hell out of me too.  I too had unfortunate experiences with this, and also don't understand why it has to search ALL drives.  Should just let us choose where to look.
Glad Gerry brought this up as I had completely forgotten about this.  I do my housekeeping using the workaround posted by Bristol above.