[vlc] Aspect ratio and autoupdate playlist

[elle at bioportale.com]

Hi!

(MAC 10.4.9 intel)

I'm streaming a playlist true internet at 640*480 resolution. I must  
add item to playlist without stop the stream. The problem is that when  
the new item is played the aspect ratio is totally wrong ( like a  
640*100 ). Why??

Is possible to autoupdate the playlist reading the item from a  
database? Or write (with PHP) and play a new playlist  without stop  
the stream?

Really compliments for your job!

Francesco