VoxForge
I have created a system that empowers Ubuntu Desktops with dictation from an Android app.
The site (with forum) is at http://ubuntuspeechinput.zymichost.com/
Selling well on Google play, with lots of positive feedback, this is a simple solution for those wanting to dictate to many Ubuntu programs without the hassle of configuring soundcards or having to spend hours training any software.