I have CDBurnerXP on my PC (apart from Nero, ImgBurn, PowertoGo, Ashampoo Burning Studio 10, the latest addition being Free Any Burn.)
To answer your first question, I just clicked on CDBurnerXP and it opened instantaneously - can't even time it
. So definitely there is some problem with your PC.
Free Any Burn is an easy to use, light weight program. You may try it. The Official Free Any Burn Website
And "Yes" . Right on the opening screen you will have the tab "Burn Audio CD from MP3/flac/ape..."
You also have a tutorial here : http://www.anyburn.com/tutorials/burn-audio-cd.htm