[MPlayer-users] Pitch change audio filters for MPlayer/mencoder

[fAX k.root]

Hi all!

Does anybody knows about filters for changing a pitch of an audio on the 
fly?
Let me explain myself in details. From time to time I have to see 
recorded lectures and I manage to understand the material at x1.7-2.0 
play speeds (I also save my time in such a manner). The problem is that 
the lecturer's pitch gets extremely high there and it is difficult to 
understand him and I'm getting tired quickly. A friend of mine has shown 
recently a Windows player (I think it was WM 10, but I can be mistaken) 
that has a required functionality. I have no Windows on my PC and I'd 
love to have the similar functionality.

Can somebody point me, what I have to do to get it, if such filters 
exist in MPlayer world?

Additionally, I'd like to report a frequent segfault while using 
fast-forward/rewind (>=1.9x ) while playing .wmv files.

Thank you in advance!

-- 
With best regards,
Pavel Gurevich