This is too simple, but it is a bit difficult to say. Because it’s easy if you know it, but it’s very difficult if you don’t know it. And there are many ways to download music. First, download it directly with music software, and then copy and paste it to p4. Second, for things that are not available on the software, you can download them from the website and use download tools such as Thunder. Having said all that, if you don’t know how, I’ll send you a video I made so you can understand it as soon as you watch it. Leave your email address.