if you are having a problem with it there is another alternative which is specially designed to work with the pc and ps3.
Java Ps3 Media Service You will have to add folders to it in the navigation/sharing tab other wise you will have all hard drive viewable on the ps3.
So just add your music video and picture folder to the list.
And just like the other program you can also use the ps3 buttons to download it from the pc to the ps3, I downloaded a 1.5gig movie in less than 10mins doing it that way, just seems faster and less hassle than using a usb stick or card etc...
Also these are some of the other links to other components that you might need to get the kind of streaming you would like.
http://oss.netfarm.it/mplayer-win32.php
http://www.smlabs.net/tsmuxer_en.html
http://www.smlabs.net/tsmuxer_en.html
http://ffmpeg.org/