several presets for one encoder

[Андрей Кацупий <scofandr gmail com>]

Hello!
Best wishes for the new year.

Is there any way to have several presets simultaneously for one encoder 
(e.g. Ogg Vorbis)?
I mean, having usual preset to Vorbis 500 kbs, then encoding to 'oga' 
160 kbs you have to change your usual preset to that value (two presets 
for Ogg Vorbis can't be saved even with different names).
Seems not to be possible in Gnac 0.2.4.1.

Thank you very much for your smart and useful app!

Andrey