Why i cant export with 32KHz sample rate?

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Hi all!

I was reading some forum posts on internet and found this. According to this guys, to achieve the most "similar to hardware" sounds you need to sample the track using the real console sample rate (in that post are included a small reference table).

After this topic and looking at SNES9X configuration, i realize SNES runs at 32KHz sample rate, and i'm currently making SNES-like chiptunes (i was poking this forum with related questions for a while), so i wonder if exporting the tracks with this sample rate would sound better for hardcore chiptune fans.

But i ran intro problem. The export layout lists 44.1KHz as the lowest possible sample rate. Is a fault on my side or LMMS cant handle this?
There are probably not many people needing low quality output. But there are plenty of free sample rate converters around that you could use to tell if you can really hear any difference e.g. http://www.voxengo.com/product/r8brain/ is free, highly rated and includes 32KHz as an option.

Steve