If all these steps necessary to make the native Voice Memo App not populate your iTunes music library seem way too cumbersome. But, you DO want to have a permanent copy of certain voice memos on your computer for furure reference you might want to consider using a 3rd party voice memo app that allows you to store your voice memos somewhere other than your music library on iTunes. In other words, take iTunes completely out of the equation.
But first, one nice feature of the native Voice Memo App:
One advantage of the native Voice Memo App is that is lets you record a Voice memo and send it as a VOICE MESSAGE via the native Message App. Just record the voice memo...hit Share...hit Message. That's it. Your voice memo will be sent to the recipient of your choice. I LOVE this about the native Voice Memo App as I hate typing! BUT! Now you have a dreaded Voice Memo in your Voice Memo App and if you sync your iDevice to your computer that voice memo will sync into iTunes with all the complications I have already explained. SOLUTION...Delete the voice memo BEFORE YOU SYNC. Delete it right after you send the Voice Message! It will never get into your iTunes music library that way. Downside...you have lost your voice memo and if you wanted to keep it, it's gone. So, this is a good solution for sending Voice Messages. But, maybe nothing else.
Now, for my solution to this problem....as I said, bag the native Voice Memo App (except for sending those Voice Messages described above) and use a 3rd party app. This is just an example, and a normally expensive one (I got it free on promo and that is why I use it).
HT-Professional Recorder
https://itunes.apple.com/us/app/ht-professional-recorder/id292413948?mt=8
Again, I got this app for free. But, I really like it. It allows you to export a Voice Memo to many different locations. E-Mail or course. But for me Dropbox is it's big selling point. If I create a Voice Memo that I know I want to keep I chose "export to Dropbox." I have a folder in my Dropbox called "Voice Memos." That is where I send all voice memos I create with this app for permanent storage. The app lets you rename your voice memos so it is easy to identify them in your Voice Memo Dropbox folder. Another advantage of exporting them to your Dropbox is that they are on your computer in your Dropbox folder AND they are backed up to Dropbox's servers. So, if your computer explodes your precious voice memos are safe and sound. And, of course, if you are away from your computer you can still access those voice memos by going to the Dropbox website on any computer and logging into your account. Or, use your iDevice and the Dropbox app to access the voice memos.
BIG ADVANTAGE! You have kept all your voice memos away from iTunes and all the problems we've discussed with that.
If you don't have Dropbox, you may know you can get 2 GB of free storage by joining. That is a lot of voice memos! And if you get a friend who has a Dropbox account to invite you, you will get an additional 0.5 GB of free storage for 2.5 GB of total storage (so will your friend for inviting you). Now you can swim in voice memos.
So, there you have it. Another way to address this Voice Memo situation.
Hope this helps some of you.
Cheers.