I have now managed this afternoon.
I was using loose terminology - I just meant "an image of a CD's contents"
VLC was not much good at converting a batch of .mp3 though ok one at a time.
Free converters were looked at but thin on the ground and when I got an AV alert from one I retreated to safer ground and installed Audacity 1.3
There I used Export Multiple [Warning don't save any changes to input files - best secure them with read-only or safe copy first as meta-data at least might be adjusted by this approach]
Then came back to ImgBurn and reconstructed the .cue file
(also used the CD Text feature with WMPCDText in WMP and Track settings are OK but
I had struggled with IMGBurn resetting fields when I wanted simple track names and my choice of Album/session title; I'll re-visit that...)
Used Daemon tools to mount the .cue file and there it was - an Audio CD image
which is mountable and appears to be burnable (with IMGBurn or otherwise)or saveable as CD Image.
When I can, I will look into the other posted suggestion - so thanks for that.
I have ISObuster on another machine and other ISO ware I will look at wrt .cue files.
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Lightning:
LOL - I got the Yoda message and if it is to be a .bin rather than a .iso I don't really care as long as I can back it up and burn it if necessary. I respect the fact that the correct implementation and terminology should be used though.
Same issue identified by PortableUltraISO so I made a .nrg file.
I also noted that laptop slimline drives aren't upto programmatic tray-load when I did the verify run. (I try not to use laptoys but right now I am.)
I'm loving the cheeky popup messages from IMGburn whenever I do something unorthodox.
Anyway, I have dug out a CD-RW and tested with that now and will be trying to get that Title Text fixed now.
YODA.7z