It makes use of Xlib and Xtest libraries to replace your mouse buttons by keyboard keys.

I made a small Debian package a few days ago:

clictap_0.6-1_i386.deb

soon included in the official repositories ?

Configuration file example including profiles for totem, xmms, rhythmbox and mplayer:

# ClicTap configuration file
# You can copy this example to ~/.clictap.conf

# When this key is pressed, Clictap will ungrab your mouse and quit
# Examples :
# quit_key q
# quit_key ctrl+q
quit_key q

# Profile used by default
default_profile mplayer

# List of profiles
# For each profile, a set of buttons to keys translations is given,
# each translation on a separate line.
# For a translation, the first field is the set of buttons,
# the second is the set of keys.
# Buttons are specified by their numbers.
# Keys are specified by their KeySym (Key Symbols).
# To know the button numbers and KeySyms, use the xev program to test X events.
# Example :
#
# profile foo
# 	1   a
# 	2   b+c
# 	3+1 space
# 	3+2 Control_L+d

profile totem
	1 b
	2 p
	3 n
	4 Up
	5 Down

profile xmms
	1 w
	2 c
	3 b
	4 Up
	5 Down

profile rhythmbox
	1 Alt_L+Left
	2 Control_L+space
	3 Alt_L+Right
	4 Control_L+Up
	5 Control_L+Down

profile mplayer
	1 Left
	2 space
	3 Right
	4 asterisk
	5 KP_Divide

profile mplayersub
	1 x
	2 space
	3 z
	4 asterisk
	5 KP_Divide

profile test
	1 XF86AudioLowerVolume
	2 space
	3 z
	4 asterisk
	5 KP_Divide