Hi BoSkin, I don't think so...
I have tried what you are saying with UltraISO 6.56 using the Tools->Convert option. Conversion from NRG to ISO works if you have a data NRG image, but reports an error
if it is an audio NRG file.
I don't know with CDBurner XP Pro, since I don't have it... but I think that it is difficult since the audio CD format is not an ISO9660 format...
Originally posted by BoSkin
...which can easily be converted to an .ISO using e.g. UltraISO or CDBurner XP Pro.