Would you like to convert the audio files into another format to listen on prortable device? You might be interesting in preserving the most significant audio tags in the process: Artist, Title, Album, Track, Year, Genre. But different audio files may use a different audio tags such ID3v1, ID3v2, APEtag, WMA tags, e.t.c. Audio Converter Plus will take care about audio tags conversion. Just open Settings->General and activate the "Include ID tags" option.
Please note that some audio formats like WAV doesn't support metadata at all, all audio tags will be lost after conversion.