Friday Night Bowling problem
 

I've d\loaded this program,which I then had to unzip,unace and then unpack an mp3 sound pak called devious.pak with a program called unpack.exe.All OK until I try to unpack devious .pak,I then get an error message as follows:-

devious mp3 unpacker

acmFormatSuggest A suitable driver is not available to provide valid format selections

Please can anyone help