Vorbis dev - Jun 2010 - libaudiomask - Audio masking threshold estimation library

It is possible that this may be of use to you ...

I have just GPL'd and released for the first time my Simultaneous audio
masking library.

You can get an idea of what it is/does from here :

http://www.flatmax.org/libaudiomask-dev/API-libaudiomask/

I am not sure what you are using right now, nor how simple it is to use.
The beauty of this library is its simplicity.
You can use any reasonable sample rate.
You can use any reasonable window size.

If you are interested, then you can get the source code here :
http://packages.debian.org/sid/libaudiomask-dev

Matt 
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enjoy some of my music: http://www.jamendo.com/en/album/30616