Hi,
I have just installed kernel power 49 and I have suddenly the (same) problem - camera claims that audio is used, media player doesnt see any song,video. However I can play video using kmplayer.
So: just removing all usb lines from /etc/networking/interfaces didnt help to me. (neither did cp libFLAC to /usr/lib)

Later on ... I have found that if I restarted in "general", not silent regime, the behavior changed - and after fcam-drivers from devel, I get the camera working. But I returns later, no idea why. Media player and images cannot see files and directories.

Edit later: Reflashed.