update to match new way of passing metadata to stream encoder
update to match new way of passing metadata to stream encoder

kode54/flac,kode54/flac,kode54/flac,Distrotech/flac,LordJZ/libflac,Distrotech/flac,kode54/flac,Distrotech/flac,LordJZ/libflac,waitman/flac,waitman/flac,LordJZ/libflac,waitman/flac,LordJZ/libflac,fredericgermain/flac,fredericgermain/flac,waitman/flac,fredericgermain/flac,fredericgermain/flac,waitman/flac,Distrotech/flac