Download FLAC Frontend http://flac.sourceforge.net/download.html

or Trader's Little Helper and decode to .wav, then add the files to r8brain. Use batch mode (so you can get them all done at once, it will take at least an hour), very high quality, and 16 bit, 44,100 sample rate to convert to CD quality so you can burn CDs. You can also archive the 24 bit FLACs on data DVD for future use.