Flac Frontend is what I've used for years and have never had any problems with it. The only issue is that I don't believe it outputs to mp3s, just wav files.

flac.sourceforge.net/



-----Original Message-----
>From: tunemark@aol.com
>Sent: Jun 30, 2011 1:39 PM
>To: audities@smoe.org
>Subject: Flac to WAV/mp3 converters
>
>Can anyone recommend a good shareware/freeware FLAC to WAV/MP3 
>converter. Been using Express Burn which is good but expensive. Had a 
>disc crash and they want me to pay all over again which is a bit of a 
>rip.
>
>Any tips appreciated!
>
>Mark C
>