I can't find an instance of this being addressed before.  I'm opening an old project and the audio files are in the wrong place.  I'm wondering if I can copy the files to the project's folder -as a group- and then get Sonar to recognize they are there.  There are a lot of files and I'm just trying to save myself the time and effort of doing it one by one.  Thank you for any replies!

After doing as you suggest, on loading that project in Sonar it will ask you where the files are. Having selected the first file I think you can use Ctrl +A to select all so that Sonar will load them all for you. Hope that makes sense.

It depends on the situation:
 
If SONAR is reporting them "missing" on opening the project, you just need to select the "Move" or "Copy" option in the dialog after telling it where to find the missing files.
 
If, on the other hand, the project is correctly referencing the files but they're not where you want them, you can manually move them from the currently referenced location to the project's Audio folder (with the project closed), and choose the "Reference" option with the new location when SONAR reports them missing from the old location on opening the project.

Thanks for the replies, guys!