[co9ol]

Audacity is where it's at. If this was me I'd fade in and out at the cut marks to make it less jarring. Then combine them into one long audio file, set Audacity to CDDA frames and have it split and export Flac level 8. If you set it to CDDA frames it'll cut the tracks without sector-boundary errors.

PS don't mess with fake Stereo, it almost always sounds worse and can have some very strange phasing issues it ever played back in mono.