CDA Audio File Format Description:

A CD Audio Track or .cda file is a small (44 bytes) file generated by Microsoft Windows for each track on an audio CD. The file contains indexing information that programs can use to play or rip the disc. The files are given names in the format Track??.cda.
The .cda files do not contain the actual PCM wave data, but instead tell where on the disc the track starts and stops. If the file is copied from the CD-ROM to the computer, it becomes useless, since it is only a shortcut to part of the disc. However, some audio editing and CD creation programs will, from the user's perspective, load .cda files as though they are actual audio data files.

Audio Transcoder supports the following conversions with CDA format files:

• CDA to AAC
• CDA to APE
• CDA to FLAC
• CDA to M4A
• CDA to M4B

• CDA to MP2
• CDA to MP3
• CDA to MP4
• CDA to MPC
• CDA to OGG

• CDA to SPX

• CDA to WAV
• CDA to WMA

Note that Audio Transcoder is not only a great Audio CD ripper. It is all-in-one solution to convert any audio files - WAV, WMA, OGG,MP3,MP4, AAC and many others.