Convert the mp3 file to a .wav file (or use the original .wav file)
Soundforge 6.0, if you've not got it, PM me for a link for it.
Open the .wav file in there.
Make your selections (highlighting start and end points of each track, one by one) and right click on top of the window selecting 'Insert Marker/Region' it auto increments in numbers each time so you can recognise the tracks.
Once they're all done, go to;
Special>Regions List>Markers To Regions, and agree when it asks you "All of the markers within the current selection will be converted to Regions, Are you sure..." click yes
Specify a folder where you want them saving, and it'll save each track for you, then use nero to burn them, taking out the 2 second gap between tracks.
You've burnt yourself a mix cd with seperate skipable tracks.
Well done, you may buy me a beverage