[winecfg] add sound driver test

[Duane Clark]

Vincent Béron wrote:
> Le mer 16/11/2005 à 18:47, Robert Reif a écrit :
>>
>> What are the down sides of using a large wave file?
> 
> A larger download size for the source/binary archives. 3MB is about 30%
> of the source package.

Perhaps make downloading the file optional. Have the test check for the 
presence of the wav file in a specific location. If it is not present, 
the test is not run, and perhaps a message is printed out mentioning 
where the wav file can be obtained. Then only those who are interested 
in running the test need to bother downloading it.