lyric player, subtitle player

Specifically for playing lyric or subtitle.
Functions:
1) Synchronously display lyric when playing mp3. Support for multiple languages.
2) Tap one row of lyric, play mp3 from this row.
3) Double-tap one row of lyric, repeat playing mp3 only for this row.
4) Support for slow play: 0.75x, 0.5x.
5) Search words/phrase in all lyric/subtitle files.
6) Look up words in dictionary.
7) Add new words to notebook.
8) List directories and files just like on PC.
9) Support upload/download audios. People can share their audios with others.