Warn that bitrate is estimated in case TagLib failed
Warn that bitrate is estimated in case TagLib failed

Bitrate for WAV files is estimated by TagLib, and in the case it
fails a simple euristic is used to estimate it considering that
the audio is 16-bit PCM. This may not always be the case.

carthach/essentia,carthach/essentia,jjaner/essentia-musicbricks,carthach/essentia,jjaner/essentia-musicbricks,jjaner/essentia-musicbricks,MTG/essentia,jjaner/essentia-musicbricks,MTG/essentia,jjaner/essentia-musicbricks,MTG/essentia,carthach/essentia,MTG/essentia,arseneyr/essentia,carthach/essentia,arseneyr/essentia,arseneyr/essentia,arseneyr/essentia,MTG/essentia,arseneyr/essentia