How to convert FLAC to WAV ?

Use DBPoweramp and read the manual - as they say, experience is what you get if you don't read the manual...

Go to the official FLAC website and download the free FLAC converter. It gives you many choices on converting to various other formats including wave.

If the OP is using XLD to rip his CDs, I gather he's on the Mac platform.

XLD also does conversion from FLAC to WAV/AIFF/ALAC among others.

You use Preferences in XLD to set the output settings (same as when ripping CDs). This includes where the converted files are and whether you automatically add them to iTunes etc. This should be easy enough to understand if you are already using XLD to rip CDs.

Next you can choose to convert a single file or Open Folder (usually an album of FLAC files). You can amend the metadata info if you want to.. and when you are done

Click Convert.

You can also open up multiple folders but you still have to convert each folder in turn.

I also used Max in the past to do batch conversions like when I got the Linn collection a while back. But some of these converted files don't play all the way through. They'd pause halfway. I am not sure if it is a problem with the original FLAC files or if it is a bug with Max so I am avoiding Max for now.

http://sbooth.org/Max/

Forgive me if this is off topic, but have you done direct listening comparisons between the two formats and found WAV to be fundamentally better?