There are rules for rendring FL projects into MP3 files.

Here are they:

1. Bit rate should be 128 kilobits per second (128 kbps).
2. Quality should be 256-point sinc interpolation.
3. Enable HQ for all plugins.
4. Disable max polyphony.
5. Enable dithering, but only for MP3.
6. TS404 should be anti-aliased.
7. Save the whole song in Sony ACID mode.
8. Enable PDC, or Trim PDC Delay.

So, can you dudes comment? Better doing this in FL Studio 10, 11, 12, and so on.

Thank you and God bless you all!