Using a cue file to add pregaps when converting flacs to wavs

[PiersdeLavison]

I have an audio CD that was archived as 7 separate Flac files, and a .cue file which includes info on the pregaps before a few of the individual tracks.

I've been told by someone on the Linux Mint forum that Freac can take the cue file and use it to re-encode the 7 tracks as wavs with the pregaps inserted where relevant, so that I can then burn the wavs to a new CD, as near as possible identical to the original they got ripped from (so that online databases will recognise it).

Since installing Freac (v1.1.7) I'm now getting an "Open with Fre:ac" option when I right click the cue file, but I can't work out what to do next.

Is this actually possible, and if so how do I do it?