A C++ library which is used to decode ID3v2.3 labels About ID3v2: https://en.wikipedia.org/wiki/ID3#ID3v2
To install the library,use:
git clone https://github.com/Lisztena/ID3V2 \
cd ID3V2 \
make \
make install
There's also an example which is able to display some information about several .mp3 file. To build the tool,use:
cd ID3V2/example/mp3info \
make \
make install \
Usage: mp3info file1 file2 ...
Todo: Fix bugs and add more features like editing the file.