I was right about the pronunciation of the letter X.

[MiLi]

I was listening to some mobile phone reviews and heard X pronounced just like 叉 and 差 are.  Not everyone pronounces it like this, of course, but many do.

For example, note how XT is pronounced in the following:

http://www.youtube.com/watch?v=zDTdWEnS1t4

http://www.youtube.com/watch?v=51gdddddoLI

Listen to how she pronounces "XBox Live" 2:20 minutes into the video.

http://www.youtube.com/watch?v=4cpIyIAZlpg