Issue with sound on ubuntu ffmpeg

Some of you reported an error with sound files on ubuntu related to ffmpeg.

If the error is only with game-over sound, please try commenting out the following lines.

game/ line 148 

gameModules/ line 57. 

If the trouble is with all sound files, comment out the following. 

game/ lines 71 to 75 and line 148 

gameModules/ line 20 

gameModules/ lines 29, 35 

gameModules/ lines 93, 98, 107, 110 

gameModules/ line28 

gameModules/ lines 52 to 59 

We apologise for the inconvenience.