I use libvlc to play my simple wav file. i found that when i use libvlc 3.0.2-3.0.4, libvlc will lost the end of the wav. if i use libvlc 3.0.9-3.0.11, libvlc will lost the begining of the wav. but if i use vlcplayer to play the same wav file. the player plays complete. what's the difference between...