Choose audio cd, and then add the track you've got. Then choose properties of this track (rightclick on it....) and goto the 2nd tab to set the range what you want the 1st track to be.
Start 00m 00s 00f
End 05m 30s 00f
Now you've selected the first 5.30 minutes of this file which will be burned as track 1.
Then press OK and again drop&drag this mp3 into your compilation (left window). Again select properties and set start to 05m 30s 00f and end at 09m 45s 00f (only an example) to make the second track.
This way you can cut up the whole mp3 file you've got in different parts.
About the 2second gab between the songs; you must again select properties of each song separate (of select all in one time) and on the 1st tab you can set how big the gab must be. Set this to "0" if you don't want a gab!! Watch out!! You cannot set the 1st track's gab to "0" cause your not allowed. (otherwise the cd won't work in a normal player!)
Burn the whole thing in a DAO session (Disc At Once) to make sure you don't get "clicks" between the songs!