iPhone: How to sync large library of MP3 + flac files from Win10 laptop
There are multiple ways of doing this I suggest the simplest one .
First you need to download iMazing app on your windows .
iMazing PC Download
iMazing MacOS Download

Launch iMazing and connect your device to your Mac or PC.
Select your device in the sidebar, then select &quot;Music&quot;.
Click &quot;Import from Folder&quot;, and select the music you want to import.
Transfer your Music.