How to easily rename voice memos in iTunes Recorded by native Voice Memo app on iPhone 5, and then sync to iTunes. But found those displayed name of voice memos that are set when I was recording are different with real file names in  iTunes after sync.

I have dozens of voice memo. How to easily rename real names with these displayed name that I want to have?
I had this problem too, but I found when I used iTunes to create an mp3 version of the file, the mp3 had the title I had set previously.