How to convert FLAC to WAV ?

have you done direct listening comparisons between the two formats and found WAV to be fundamentally better?

With USB and Firewire interfaces, Yes.
Steve N.
Empirical Audio

Steve, Will a FLAC file converted to WAV be indistinguishable from a CD ripped directly to WAV. ?? ...Matt

"With USB and Firewire interfaces, Yes."

Any logic to why a particular interface would make a WAV sound better?

I spent a month ripping to all formats, FLAC, WAV, AIFF. I found absolutely zero difference between the above. i went with FLAC since it was smaller and held tags, there was no reason to go with WAV and in fact there were reasons not to. Curious why you would do this?

I am curious to see for myself if there is an audible difference, following Steve Nugent's recommendation.