The reason why the audio isn't playing is because it's an unsupported format (rasipr). On my N900 it plays the video OK, but no sound - and it also tells me that it can't find the rasipr codec. Why yours is crashing I have no idea - possibly because you're using a version that you've built manually? (according to your post history).

A qucik-n-dirty solution would be to convert it into a more sensible format (mpg/avi) etc which your N900 should be able to handle more easily.

Also, I see from your post history that you've had many other problems in the past relating to codecs, files not showing up in media player etc. Most of the problems have been discussed to death here at TMO so it's pretty pointless going over them again. Use a Google search with "site:talk.maemo.org" to limit the results to this forum - much better than the forum search functions.