Nero 'mixed cd' mode. Why only data 1st.?



Hi, maybe someone can help.
why is it not possible to change the order around in which the files are being burned in nero’s ‘mixed cd’ mode? i.e. wave files first, then data (e.g. mpg file)?? (so that wave files are played on a cd player first). What makes it so difficult to offer this option in a prog. like nero burning rom? I know its possible in ‘cd extra’ mode but i need both wave and mpg files to appear in 1 list when opened. I already asked ahead support, they said its not possible. Is there another prog. which does this? Why is it so difficult? With Toast for mac, no problem…