ISO format doesn't support Audio or Mixed Mode CDs.
You mean Bin+Cue (CDRWin Image - CDRWin was the application that introduced this image format) or Nrg (Nero Image format) or mdf+mds (Alcohol Image format) or ccd+img+sub(+cue sometimes) (CloneCD Image format) etc. etc.
Nero Burning ROM and Daemon Tools are easy to handle.
Download the free version of Daemon Tools 4.09.1 from:
http://www.disc-tools.com/download/daemon
During installation uncheck the addware (Searchbar and Save Now), I don't remember the exact name, but it must be 2nd or 3rd in the list of files to be installed.
I also recommend you to download and install SPTD v1.50 (needed by Daemon Tools) from:
http://www.disc-tools.com/download/sptd
A trial version of Nero Burning ROM can be downloaded from:
http://www.nero.com
Most burners come with an OEM (full working) copy of Nero.