converting midi files to mp3 files

by Mark Crocker
(The Colony, Tx)

I have a Yamaha PSR3000 and am wanting to make a CD of the songs I have arranged with the built in sequencer. The problem is that once I have recorded the song on my memory stick and insert eh stick into my computer, the instrument sounds are not the same as they were when the memory stick was still in the keyboard. I am thinking I have to convert the midi files into mp3 files are something else. I have downloaded several free converters but once converted, the files still do not sound like the orginals from the keyboard. What am I doing wrong and how can I make a CD with the accurate sounding instruments from the PSR3000? HELP!!