I've seen a lot of people ask about the huge block of audio tracks when they drag the MXF files into their sequences... I just made this quick video to show how you can tell Premiere to only use one or two audio tracks and then apply that to all your footage. Hopefully this makes sense and helps some people out!
https://www.youtube.com/watch?v=5z1EkhXEkKQ
https://www.youtube.com/watch?v=5z1EkhXEkKQ