Sonar X2 Producer ,RME PCIE no sound

Hi Sergio, and welcome! There is another thread posted that you may want to check out (http://forum.cakewalk.com/FindPost/2954809). It sounds like you are trying to play MIDI (note info), but not hearing sound (audio). Check out that thread, as there are some good explanations.
 
Basically, a MIDI channel is simply note information (no audio), so it must be "played" by a soft synth. If you insert a soft synth and assign the output of your MIDI track to that synth, you should be able to hear sounds. Please let us know if that doesn't answer your question.
 
Happy New Year!

Okay, I need to step back a second... close SONAR and hit the Start button, type in "sound" and select "Change sound card settings" from that listing. Is Windows recognizing your sound card there? You "should" be able to see it, click on it, and hit the "Configure" button... the next window should have a "test" button. Does that play?
 
"If" Windows and SONAR are trying to use the same card, you can either force windows to recognize something other than what SONAR uses (allowing SONAR to use ASIO mode), or will have to set SONAR to WDM mode (Preferences->Audio->Playback and Recording).

Hello Cactus, the reason i set it to WDM mode is that when i set it to ASIO in sonar then it come up with a error.
Ok i will try and get the sound working in windows first.
Thank you
Serg

you need to untick any other sound cards that may be listed to get ASIO mode..
 
e..g onboard one.. scroll thru the list of in / outs .. and see if anything else none RME is listed, and untick
 

Thank you for all your help, i updated the bios to the latest version then restarted the pc now it all seems to be working fine for now , im now using ASIO and RME as the sound card :) .

I run my onboard in tandem with my audio interface. In order to do this without issues, they both need to be online and then go to "Change sound card settings" in Win 7. You will see them both there, and at that point you need to assign the onboard audio as "Set Default"
 
This will lock Win7 into the onboard audio even when it sees the audio interface power on/off (which I do frequently). That way the interface is always free and clear of Win7 to allow another program (i.e. SONAR) to use it in ASIO mode.

What Mettelus say's is only true with some set ups. Plenty of people have both on board and a Audio interface co-existing happily together. But there are also many of us who had to obliterate all signs of our on board audio to get things to work properly. 
If your computer is only used for DAW this is not a problem. I disable all windows sounds anyways. There's no need for having 2 sound cards/ 2 sets of speakers anyhow unless you want to proof your songs though cheap computer speakers. 
 
If I turn my audio interface off there is simply no sound. I can turn it back on with Sonar open and Sonar just asks if I wish to use it.