add docs on sample format for process calls (SF#1627966: http://sourceforge.net/tracker/index.php?func=detail&aid=1627966&group_id=13478&atid=213478)
add docs on sample format for process calls (SF#1627966: http://sourceforge.net/tracker/index.php?func=detail&aid=1627966&group_id=13478&atid=213478)

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