Import flac file is made out of tune

I imported a 21 track set of .flac files of my band successfully into C12 pro but they play slower and out of tune iin the project. The files when played directly from another windows player play correctly. What am I doing wrong here?

most likely the project and your audio interface operate on different sample rates. Kindly use the search function of this forum to find an abundance of topics and answers on what to look out for and how to resolve this.

That’s IT many thanks!