With the advanced technology the Galaxy seems able to field and the use of Holograms in this series, who is to say what Grace, if it is her, is able to do. Hell look at Brera, Mr. T-101 himself.
Well this is what you can do. You can convert your FLAC over to WAV then import into iTunes and convert to AAC. To convert FLAC to WAV you can download WinAmp and the Flac with library support plug-in for Winamp.