default application for mpg mime types

[colliera ukzn ac za]

hello,

not quite sure where to post this, so trying multimedia, control-center and nautilus. i am having trouble getting embedded mpg files in a pdf document to run properly. after opening the pdf in acroread-7.0.9 i find that there is a little paperclip icon, which if i double-click opens a window with three options, one of which is to open the mpg file. so far, so good. i select this option and after a short pause the following appears on the terminal:

Initializing gnome-mount extension
seahorse nautilus module initialized

and moments later a dialog box stating 'Couldn't display "/tmp/Acro000vR6pVe/wwlln-africa.mpg". The location is not a folder'. i have confirmed that the temporary file mentioned in the dialog does indeed exist! so, obviously something is going awry while nautilus tries to display the mpg file. so i fired up nautilus, found the mpg file and altered the permissions so that it would use mplayer to run the file. confirmed that when i double-clicked the mpg from within nautilus it does in fact launch mplayer... so that looked encouraging. went back to acroread though and encountered exactly the same problem.

okay, so what i actually want is for acroread to launch mplayer to open these embedded files. but for some reason acroread defers to the window manager to decide which program to run. how can i tell gnome otherwise? that is, how can i globally set the mapping for mpg files to mplayer?

thanks a lot!

best regards,
andrew.

-- 
Andrew B. Collier

Space Physics Group
Hermanus Magnetic Observatory

Honorary Research Fellow                                   tel: +27 31 2601157
Space Physics Research Institute                            fax: +27 31 2616550
University of KwaZulu-Natal, Durban, 4041, South Africa     gsm: +27 83 3813655