debian wheezy only mythtv has sound - not mplayer etc

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http://www.linuxquestions.org – New squeezy install, and the sound is only partially working. It's just fine viewing a video in mythtv. But no sound with mplayer, etc. Also, when I capture from /dev/video directly to a file (e.g. cat /dev/video > test.ts) I don't hear any sound on playback. However, copying that same file to my old faithful squeeze, on another system, the sound is fine. I notice that wheezy is using faac for sound, while squeeze is using faad on the same file. Any help would be appreciated. (HowTos)