[Blindmath] meed some information about math player

[Rekha]

hi all
i need some information about math player.
i came to know about it recently only
what kind of a software is this?
how it works?
how can we get it?
whether it works in all formats of reading materials for eg pdf's?
what are the experiances of those of you who are useing it?
is there any additional requirement to use this?
i need this information to find a solution to problems that i have in 
reading math equations and formulas and others in statistics and maths.
Regards
Revathy