Buildroot and media files

i have problem in playing media files(wav,mp3,ogg)

im using Buildroot with crosstool to build FileSystem that support Qt apps

when i run any Qt application which contain media files
Mini2440 terminal says

""Warning: You do not seem to have the package gstreamer0.10-plugins-good
instal.
Some video features have been disabled." 

althouh i checked on wavparse and avi in gst-plugins-good
and gstreamer, libogg and libvorbis

when i play wav in the app terminal says
"Failed opening audio device"

plz help

i have the same problem with media file
, i tried to run Qtopia and play media ,they worked fine

but they dont work with FS that is generated by buildroot

so plz what libraries to select in Bulildroot to play mp3,wav,ogg