$ dpkg -l | awk '/^ii/ {print $2}' | xargs apt-cache policy | awk '/^[a-z0-9\-]+:/ {pkg=$1}; /\*\*\*/ {OFS="\t"; ver=$2; getline; print pkg,ver,$2,$3}' | grep debian-multimedia
devede: 3.11b-0.0       http://www.debian-multimedia.org        sid/main
libamrnb-dev:   7.0.0.2-0.0     http://www.debian-multimedia.org        sid/main
libamrnb3:      7.0.0.2-0.0     http://www.debian-multimedia.org        sid/main
libamrwb-dev:   7.0.0.3-0.0     http://www.debian-multimedia.org        sid/main
libamrwb3:      7.0.0.3-0.0     http://www.debian-multimedia.org        sid/main
libdca-dev:     0.0.5-0.1       http://www.debian-multimedia.org        sid/main
libdca0:        0.0.5-0.1       http://www.debian-multimedia.org        sid/main
libdvd-dev:     0.1.12-0.1      http://www.debian-multimedia.org        sid/main
libdvd0:        0.1.12-0.1      http://www.debian-multimedia.org        sid/main
libfaac-dev:    1.26-0.1        http://www.debian-multimedia.org        sid/main
libfaac0:       1.26-0.1        http://www.debian-multimedia.org        sid/main
libmpeg3hv:     2.1.0~svn20080706-0.0   http://www.debian-multimedia.org        sid/main
libmpeg3hv-dev: 2.1.0~svn20080706-0.0   http://www.debian-multimedia.org        sid/main
libnextaw0:     0.15.1-0.1      http://www.debian-multimedia.org        sid/main
libquicktime1:  3:1.0.3+debian-1.3      http://www.debian-multimedia.org        sid/main
libquicktimehv: 2.1.0~svn20080706-0.0   http://www.debian-multimedia.org        sid/main
libquicktimehv-dev:     2.1.0~svn20080706-0.0   http://www.debian-multimedia.org        sid/main
libxvidcore4:   2:1.1.3-0.5     http://www.debian-multimedia.org        sid/main
libxvidcore4-dev:       2:1.1.3-0.5     http://www.debian-multimedia.org        sid/main
mencoder:       1:1.0.rc2svn20080706-0.1        http://www.debian-multimedia.org        sid/main
mplayer:        1:1.0.rc2svn20080706-0.1        http://www.debian-multimedia.org        sid/main
xdtv:   2.4.0.cvs20080514-0.1   http://www.debian-multimedia.org        sid/main
xdtv-dev:       2.4.0.cvs20080514-0.1   http://www.debian-multimedia.org        sid/main