linking problem in powerpoint presentation

hi all of you,

I make a powerpoint presentation on the powerpoint, but there is little problem has been occur, the presentaion working good on the my computer but when I show on the other computer the video and songs file has not be working what i do? I thought that there is something linking problem. Which type of linking I use in this presentaion - relative link or absolute link.
what i do?

and most important how I convert powerpoint presentation on avi or other mpeg file?

make sure the video and audio files are saved in the same directory as your presentation and make them relative.