I have an ASUS M2N2 Sli Deluxe Motherboard that came with a SoundMax soundcard.

Using Sound Recorder or other recording software, I can record from a microphone or though the Line-in jack, but I cannot record from the CD player or from the Stereo Mix.

In practical terms, this means that, if I play a MIDI music file on the computer, and try to record it with some digital audio software, I get nothing. I could probably route a CABLE from the sound card output jack to the line-in jack, but the whole point of the "Stereo Mix" recording option is you don't have to do that kind of thing.

All the drivers are WORKING properly and I have made sure that nothing is accidentally muted.

Any ideas?I haven't try that way. I used Sonar 6 to do it for me. After I mixed my MIDI to the way I want then I record each TRACK and export them into audio. I used Easy CD Creator 7 burn it into my cd. You can use WMP 9 burn into cd too.  Hope these Links help:

http://midconverter.com/convert-midi-to-mp3.shtml

A program that does the converting MIDI to MP3. I haven't try yet. I'm pretty sure a trial version will only allow you to convert maximum 25% of your MIDI.

http://convert-midi.com/midi-to-mp3.shtmli HIGHLY recommend getting a new sound card. many people, including me, have had issues with the soundmax card.