A shorthand list --- check Stop Staring p49 to 54 for a more complete description
B/M/P --- mouth closed, width not important, can us lip in shapes
EE --- wide, open is not important
F/V --- lower lip in, width not important
OO --- narrow
iH/T/S --- wider than the last viseme
R --- narrower than the last viseme
L/N --- at least slightly open, change in width from last shape (wider or narrower)
H/D/SH/TH/NG/J(soft G) --- slightly wider than last
AW/OH/UH --- slight opening from last shape
EH/AH/UH --- slight opening and widening from last shape
Hard G/K --- no change in shape
It is for us the living rather
iH-T iH-S F-OO-R UH-s TH-EH L-iH-V-NG R-EH-TH-R
to be dedicated here
T-oo B-EE D-EH-D-iH-K-EH-T-EH-D H-EE-R
to the unfinished work
T-OO TH-EH UH-N-F-iH-N-iH-SH-D OO-R-K
which they who fought here
OO-iH-K TH-EH OO F-AW-TH-EE-R
have thus far so nobely advanced
H-EH-V TH-UH-S F-AW-R S-O N-O-B-iH-L-EE AH-D-V-AH-N-S-D
iH-T iH-S F-OO-R UH-s TH-EH L-iH-V-NG R-EH-TH-R
removing redundant shapes becomes
iH iH F-OO UH-s EH L-iH-V-NG R-EH-R
Maya only works with wav 16 bit files. You can use Audacity to convert mp3s or other audio formats to 16 bit wav filose