/*@@@@@@ add step to validate seek table before using? encoding to pipe leaves some flac files with incomplete seektables which screw us up */
/*@@@@@@ ignore seekpoints where frame_samples = 0 or if point is >= total_samples and total_samples is known (or just alter seek_table in read_metadata_seektable_()) */
/*
* Now we refine the bounds if we have a seektable with