My two cents...
First, quoting from:
http://www.tex.ac.uk/cgi-bin/texfaq2html?label=TeXpronounce
How should I pronounce "TeX"?
The 'X' stands for the lower case Greek letter Chi (the upper-case
Greek letter doesn't look in the least like a letter "X") and is
pronounced by English-speakers either a bit like the 'ch' in the
Scots word 'loch' ([x] in the IPA) or like 'k'. It definitely
is not pronounced 'ks'.
and then quoting from
http://www.tex.ac.uk/cgi-bin/texfaq2html?label=latexpronounce
How should I pronounce "LaTeX(2e)"?
Lamport never recommended how one should pronounce LaTeX, but a
lot of people pronounce it 'Lay TeX' or perhaps 'Lah TeX' (with
TeX pronounced as the program itself; see the rules for TeX). It
is definitely not to be pronounced in the same way as the
rubber-tree gum. The 'epsilon' in 'LaTeX2e' is supposed to be
suggestive of a small improvement over the old LaTeX 2.09.
Nevertheless, most people pronounce the name as 'LaTeX-two-ee'.
and about LyX, I got the tip from someone that as Swede I can just
pronounce it as the Swedish word for luxury which happens to be "lyx".
(And I know from experience too that Americans find it hard to distinguish
between [licks] and [lyx] :-)
/Christian
--
Christian Ridderstr�m, +46-8-790 91 37 http://www.md.kth.se/~chr
Mechatronics lab, Dept. of Machine Design http://www.md.kth.se