UDP stream problem! Need your help!!

[cwk]

Hi,all:
Now I use a little programme to read packets from a TS file and send the packets to vlc player, the pictures is played correctly, but vlc often give me the info: audio drift is too big (******), dropping buffer.
I just read 7 TS packets(it's 1316 bytes) from the file and send it out without doing anyting with it.
How to solve the audio problem? Any suggestion will be great help!