* Worked-around a reported security problem with certain WAV files and buggy system codecs.
* Skip silence DSP improvements.
* Improved MP3 tag handling (ID3v2) compliance:
o More compliant WXXX parsing.
o More compliant ID3v2.4 date handling.
o Compressed 2.3 tags are now readable.
o Due to heavy structural changes relevant code, please watch out for MP3 tagging regressions.
