[Richard Crowley]

"Adrian" wrote ...
Cany any one tell me the correct name for CD format music? Is there a
dot suffix for a music CD "file type".

You effectively want a "WAV" file, stereo, 16-bit, with 44.1K sample rate.
That is the Red-Book CD "native encoding". If you record some other
kind of file, many CD writing software will convert on-the-fly to that mode,
but better to do the original capture that way and avoid the intrigue.