LinuxQuestions.org - Running Game, but no Speex :/

Hi I have just installed FC3 and I have told it to install all the GCC etc files onto the computer. I have copyed a game which came with this months Linux Format and I "cd" into the directory that the game files where extracted into and they I typed "./configure" it starts to display text saying things like :-

Code:

..

checking for library containing opendir... none required

checking for sys/types.h... yes

checking for sys/stat.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for memory.h... yes

checking for strings.h... yes

checking for inttypes.h... yes

checking for stdint.h... yes

checking for unistd.h... yes

checking for string.h... (cached) yes

checking sys/time.h usability... yes

checking sys/time.h presence... yes

..

But then it stoped like so:-

Code:

..

checking for speex_encoder_init in -lspeex... yes

configure: error: *** Speex header not found. Please install Speex (http://www.speex.org).

[intel17@localhost glob2-0.8.17]$

I did downlaod Speex from Speex.org, but I dont know what to do now :D
lol any help would be very much apricheated (sorry i'm not a very good speller)

Thanks for reading,
Pete