Adobe Premiere not reading audio from .MTS file
Apparently its a problem with Premiere pro Cs6 that haven't been updated or fixed as yet there are 3 ways that might help you resolve your work;


Install an earlier version of premiere pro like 4 - 5 depending what version fits what you do......(DO NOT UPDATE!!!)
Convert all your videos to mp4 720 or 1080, what every quality your working with. Might be a bit time consuming but it works.
Import the ENTIRE CARD, very important, all the files from your card to your pc/mac, the metadata should be located somewhere in a folder within the card, it's not on the .mts file.


Method 3. has been reported to work so try it and let me know.
installing new codecs wont work.