Linux: can't open /dev/dsp

I am getting an error while running festival on my system: linux: can,t open /dev/dsp I was searching for this error on the Internet and found this instruction: > To solve this problem just write this .festivalrc in your home directory or /usr/share/festival/festival.scm > > (Parameter.set 'Audio_Command "aplay -q -c 1 -t raw -f s16 -r $SR $FILE") > (Parameter.set 'Audio_Method 'Audio_Command) but I don't have any document named .festivalrc in my home directory. I created a document in my home directory with file name .festivalrc and I copied above two lines in that document and saved it, but festival is still not working. Please can anyone tell me right steps to solve this problem