am 800af390: am b64af9a2: Fix a number of timestamp mismatches in the mp3 extractor and decoder that would lead to invalid reporting of the current playback time for mono and/or non-44100 kHz mp3s.

Merge commit '800af39038dcded12b66eccb8932a761e20b1976'

* commit '800af39038dcded12b66eccb8932a761e20b1976':
  Fix a number of timestamp mismatches in the mp3 extractor and decoder that would lead to invalid reporting of the current playback time for mono and/or non-44100 kHz mp3s.