Bug#671934: ABI changes without SONAME change

[Uoti Urpala]

ff_codec_wav_tags is not part of the ABI (all symbols with ff_ prefix in
Libav are internal and may not be used in outside applications).

MPlayer1 is designed to be compiled with an embedded copy of FFmpeg
rather than use shared libraries for libavformat etc. It does not stay
within the API exported by the libraries. Try using mplayer2.