Are you guys using the optional ($19) MP3 direct export?
Is it functional with X3?
 
Supposedly there should be a 30-day trial, but do I need to install anything first to get this to work?

As an alternative, consider getting NCH software Switch Plus for 10 bucks more.
It's one extra step but it converts basically any audio format to any other, it's quick and simple, and it's not fixed to Cakewalk.

Use the free Lame encoder and configure it in Sonar.  Here's some instructions on how to do this:-


 

Skyline_UK
Use the free Lame encoder and configure it in Sonar.  Here's some instructions on how to do this:-

Hi. This sounds pretty cool! Do I really need an original installation CD. My Sonar versions were always just digital distributions. Can't I just type all that info?

I've been using the mp3 encoder since at least 8, it has continued to work through every upgrade and still works fine in X3.

Using the $19 encoder here. Works great.

Thanks again, guys.
 
I managed to get the LAME Encoder to work without the CD. I had to try 3 times, though.
 
So for the record (in case someone else gives this a try): make sure you select "SoundCloud - WAV" in the External Audio Encoder Setup before you click the "NEW" button and then type the settings from the screen shots (1st time I didn't care about the setting and it used FLAC, 2nd time I used MP3 and it asked me to purchase a Cakewalk MP3 Encoder upon export).
 
Now it works really sweet i.e. it exports and keeps the WAV file and then converts it to MP3 in one go for all mix stems 

Glad you got it all working fine!

I can't seem to get it working.  I can export to WAV or FLAC but mp3 gives an error:
    "Warning: The External Encoder returned an error code.  The File may not have encoded properly."
 It (Lame) is in the proper spot:   lame -b 192 -m j %I %O    settings. 
 
 
If I export a wav from SONAR then run the lame in command line on the wav it works...just not working 'automatically' thru sonar.

Is the $19 encoder from Fraunhofer?
 
G