Hi ratty86,
Thanks for reaching out in Apple Support Communities. I understand that you're having trouble syncing voice memos in iTunes on your PC to your iPhone. I can see why you'd reach out about this; I'd like to help. I'd recommend taking a look at the steps in this resource for managing content on your device using iTunes: Sync iTunes content on PC with your devices
If you continue to have trouble, please provide the following details:
Are these memos that were previously transferred to iTunes from a different device?
Are you using iCloud with Voice Memos on your iPhone? You can check in Settings > Your Name > iCloud.
Are you able to sync other content, such as music or movies, from iTunes to your iPhone?
Best Regards.