Why is it that there are so many different types of media players around? Or more to the point, so many formats that require you to download a different player to be able to view media on certain websites?. Some sites give you a choice of either WMP or Real Player, but others seem to only support Quicktime. Considering that these players take up a fair bit of space on your HDD when you d/load them, is there one that does the whole lot?.