Comparing the results of id3tag to the results of taglib: 3 potential bugs

[Xavier Duret]

> > taglib svn 621706 returns duplicate genre string like "Rock Rock"
> > instead of "Rock" and "Pop Pop" instead of "Pop" (list is non
> > exhaustive).
Here is one example of the tags we are speaking about. It is ID3v2.3.0.

0000:0000 49 44 33 03 00 00 00 00 11 1c 54 45 4e 43 00 00 ID3.......TENC.