atari800 emulator problem on Linux Mint

[atari800 emulator problem on Linux Mint]

I fixed this - see http://forums.linuxmint.com/viewtopic.php?f=47&t=99821

[atari800 emulator problem on Linux Mint]

When I run the emulator, I get this:

 

Unrecognized variable or bad parameters: 'VIDEOMODE_HOST_ASPECT_RATIO=0:0'

Failed to stat runtime directory /home/andrew/.pulse/18c7691f933dcc7695af128100000005-runtime: Invalid argument

Problem with audio:

Sound is disabled.

joystick 0 not found

joystick 1 not found

 

How do I get sound and joystick to be emulated?

 

I am using Linux Mint 12 Gnome 32 bit on a Asus Eee PC 901.

 

Thanks.