Very good bit of advice. Most of my songs are old enough that they are already MP3s.
Apple devices can be really well designed and desirable.
But some of us prefer other options and MP3 is an old standard. My linux computer recognizes MP3.
And when your expensive Iphone gives up the ghost, you can't play the music. Well, not as easily. You can still download the Itunes program on your MS computer and run it that way. However, that program seems to be a major resource hog.