Hi all,
my problem is as follows: When recording with my Audigy 2 NX card I get an error like “no MIDI in” which is not surprising because the NX doesn’t have MIDI in. Is there any way to turn this off for good? I don’t need MIDI in but n-track seems to love it 
Go to preferences and you midi settings then midi devices.
What do you have in the listed devices there?
You can select or deselct the devices in there
Rich
MIDI Input: none
MIDI Output: MIDI Mapper, USB SoundFont
That’s the point. There’s no MIDI in, that’s why I keep getting errors.
Check preferences to make sure “Keep MIDI devices open” is NOT checked. I read somewhere that n-Track has started to defaulting to “Keep MIDI devices open” in recent builds. That will cause the error if no MIDI device IN is present to KEEP open. 
TG
Look at the icons on the tool bar. If you have one that looks like a piano, or a piano and a microphone, click on it and turn it to the mic only icon. That makes it audio input only.