[Thomas Smith]

Have you tried to convert MXF to MP4 HD or MPEG-2 HD to import MXF to Premiere?

[Thomas Smith]

I found this step by step guide to convert CDA to MP3 with iTunes:
https://en.kioskea.net/faq/7384-convert-cda-to-mp3-using-itunes

There is also a guide to convert CDA to MP3, WAV, WMA with the handy CD ripper:
https://www.softwaretree.net/article/how-to-convert-cda-to-mp3-with-a-cda-to-mp3-converter.html