.cda files are for reference only. It usually refer to a cd. so you have to be sure the correct cd is in the drive, otherwise..nothing.
All of these files used to work, im not sure at what point they stopped working, some of the mp3 filesizes and playlenghts are displayed but some arent, some mp3s play and some dont, no .cda files will play at all.I have since reinstalled win xp pro and SP1 and the nimo 5 codec pack, (this configuration used to play all my audio files) winamp shows some mp3 files their filesize and playtime, but when i try to play them nothing happens, windows media does the same thing, and neither can recognize cda files anymore. Please help