From the ALSA wiki
ESS 1938/1946 Solo-1 Audiodrive
Somebody needs to cut-and-paste the basic ALSA stuff in from the other pages...
This is the only Linux driver for the "ESS Technology ES1969 Solo-1 Audiodrive". I set it up with no special options and it sounds great. (If you came here from a Google search, go to http://www.alsa-project.org/ )
A step by step reference can can be found at:
Retrieved from "http://alsa.opensrc.org/Es1938"