a better indicator bar of MB to be copied/burned

When adding data for burning the bar goes from green to red to indicate too much data (for the size of the CD for instance). A better indicator by file size of how much data is too much would be good. At present you have to remove tracks one by one until the bar drops back to green. Displaying file size of each track and how much a CD can accommodate would make it easier to delete the larger tracks and keep a greater number of tracks on the CD.