For some time now Mapper has had integrated support for taking dictations that then can be used for example in JOSM when editing maps. The dictation component was quite generic so I split it out and made it into a library and widget that can be used in other applications.
libdicto repo can be found here and release here. I just uploaded 1.0.6 to maemo extras builder.
As the widget is quite generic I also made a simple dictation app for the N900 (and soon for the N800/N810/770 too), called mydicto. As soon as libdicto is built I'll upload mydicto to the builder too.