"Firstly, take all effects on the master bus off unless creative effects are used and this has been discussed with us beforehand. This includes the "Mastering Combinator Suite" in Reason and the limiter on Fruity Loops which is left on by default.
The audio export must not be clipping, and allow 3dB atleast of headroom (space between clipping and the highest peak in your audio).
A useful free tool for analysing your headroom and other important tasks is Voxengo Span
The audio should be exported at 24 bit 44.1khz (or a higher samplerate if your audio/session are being run at this) Wave audio or Aiff, if this isn't possible, please email us first. No MP3s or other lossy audio(not even 320s) can be used for mastering purposes. Please do not add dither to the signal, this is best left to us.
If you require fades or have any edits wanting to be done to the entire track, please include this in your email to us, it is best to leave the tops and tails of the track in this case. Also make sure if you are exporting from a DAW, to begin the export at least a bar before the song begins to avoid glitches caused in latency correction.
PLEASE NOTE: MP3 Audio is not a correct submission format."
me podriais ayudar a lo que tengo que hacer?,es decir,hago un bounce o no,como pongo esas frecuencias,como pongo el formato etc,esque en el tema de mastering soy nulo..