Added ID3.NET library
Implemented AudioFileDescriptor and the Mp3FileDescriptor (structure only)
Implemented Write method of the Mp3FileDescriptor which is now able to write title, artists, album and year to the downloaded file's metadata
Setup album cover and implemented the cover in the mp3filedescriptor
Upgraded ID3 version (1.0 -> 2.3) and properly implemented the cover image picture frame.
Merge pull request #5 from Mostey/id3_tags

ID3Tag Support