You can mount either .CUE or BIN. , Some CD burning software on my PC ages ago needed a .CUE file to burn the .BIN to a CD. Might be a redundant thing now, not sure as i dont burn .BINS unless i am making a CDG and that reads from a cue-sheet in order to make the CD.
As above said, Get a Virtual Drive Emulator, there are loads of free ones, the better ones are not free, Daemon Tools, Alcohol 120% are probibaly the best, but i have a few that will ony work with CloneCD.