.cda file

Filename extension

.cda is a common filename extension denoting a small stub file generated by Microsoft Windows for each audio track on a standard "Red Book" CD-DA format audio CD as defined by the Table of Contents (ToC). These files are shown in the directory for the CD being viewed in the format Track##.cda, where ## is the number of each individual track.

This keyword could refer to multiple things. Here are some suggestions: