Having trouble uploading mp3 into cubasis for re edit purposes

I’m completely new to all apple products and I’m having difficulty importing audio into cubasis. There is an old rock tune that I want to mess around with. It’s on the Amazon music app and I’ve hit the download button and it says that it has been downloaded but i can’t find it anywhere. I need to store it on a separate file to use when off line so not sure drop box would be a good idea. Can anyone help?

I think that Cubasis only imports WAV audio files.
If you can convert it using audio share or a similar app you should have no problem importing it.
Save it to the files folder, then import to cubasis
It will show up in media bay/audio in Cubasis.
Hope this helps.