mesquita,
Some questions for you:
1. Where did you get the .lrc file from?
2. If you made it yourself, it could be the what it's done or the way it's saved.
3. Try converting your mp3 song to 128Kbs instead then try playing it. I know I've had a problem with another player in the past where if the bit rate is not 128, it won't display the "T" and won't show the lyrics.
4. Try downloading our sample mp3 with lyrics -
Matchbox Twenty - Unwell (with lyrics) from
here. Put it on your player and see if it displays the lyrics. This definately works on a number of my players, so should work for yours as well.
Post me the results and let me know if what happens.