How can I load mp3's into iPhones and iPods?..

[Demanding Truth]

I sometimes get given retired notebooks with windwoes or mac in them.. I add iTunes, and they work for a couple months processing music into iPhones and iPods, then they auto update, and suddenly something mean and nasty kills the OS.. Same thing happens with both windwoes and apple notebooks...
I can't get anything to process music for iPhones now.. What's the big secret to getting music into apple things?..

[newiron8]

you will have to instal iTunes and then add the music to iTunes, Then sync your iPhone to the PC. You will then need to choose what albums you add to your iPhone

[newiron8]

you will have to instal iTunes and then add the music to iTunes, Then sync your iPhone to the PC.

You will then need to choose what albums you add to your iPhone

[wander222]

You can drag and drop MP3 files into iTunes and sync your device through the cable. If iTunes isn't working, you can try a third-party tool like iMazing or CopyTrans to transfer music.

[emmamegan]

You can follow these steps -
Using Apple Music/iTunes (Mac or PC)
Open Apple Music (macOS Catalina or later) or iTunes (Windows or older macOS versions).
Connect your iPhone or iPod to your computer using a USB cable.
Drag and drop your MP3 files into the Music Library in Apple Music or iTunes.
Select your device in the app (it appears as an icon in the top-left corner).
Go to the Music tab and check the box for Sync Music.
Choose to sync your entire library or selected playlists, artists, albums, or genres.
Click Apply or Sync to transfer the MP3s to your device.