I want use "gpsk31" - specialised software for amateur radio. In a nutshell, I want audio signal from default PulseAudio mixer in this program.
Unfortunately, it's written to use OSS (default device is /dev/dsp). Of course, Ubuntu has default pulse, so /dev/dsp doesn't exist.
I know about padsp, but it didn't work. When I'm run:
padsp gpsk31
Audio signal is empty (in gpsk31 settings I have /dev/dsp). The sound I'm looking for is from Google Chrome, but in future - it's from line-in / microphone.

My hardware configuration is integral sound card - I'm not using it - and Audigy 2 ZS (without any problems in system, works from install). Any solutions?
Ubuntu version: 13.04