I am trying to get my Linux installation to play musix. I have debian Linux. The contents of /etc/debian_version are:6.0.2I cannot seem to get any sound to play from my speakers and after looking through forum postings, I have hit a brick wall.lspci | grep Audio gives the following:02:00.0 PCI bridge: Creative Labs [SB X-Fi Xtreme Audio] CA0110-IBG PCI to PCIe Bridge03:00.0 Audio device: Creative Labs [SB X-Fi Xtreme Audio] CA0110-IBG0a:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]When I attempt to run the speaker-test command I the following error:Playback open error: -16,Device or resource busySo I look for the process which might be blocking the soundcard: lsof | grep snd (command taken from some forum). Once the process has been killed, I get the following error: Write error: -5,Input/output errorxrun_recovery failed: -5,Input/output errorTransfer failed: Operation not permittedI don't know what else to do. Can anyone guide me in the correct direction? 
Debian Linux installation cannot play sound
debian;audio