You might have to install EZD for the library. Not sure about SD2 as far as installing the library itself (I never owned SD2), but worst comes to worse, install it and then let SD3 detect the library. You should then be able to erase the app and keep the library.
Sounds like you need to adjust the sensitivity of your drums to your playing style in order to produce the appropriate MIDI velocities. Your hardest hit should generate a velocity of 127. Following that, you might want to further fine tune it the velocity map in the MIDI/e-Drum Settings (and save it).
As long as you have the libraries, the MIDI should appear in your Grooves tab. Worst case is that you may need to run the Product Manager to see if there are any updates needed to be installed for SD3. That should take care of any missing MIDI.
Again, this all depends on the stereo file itself. If it sounds like it was recorded through the phone in someone’s garage, you can expect to have issues because of the nature of the recording. Perhaps, one day the ML behind the tracker might be smart enough to determine a kit piece due to its placement within a beat, but for now, expect to do a bit of work on a stereo file especially if you have a less than satisfactory recording.
I have managed to extract many grooves off of a number of YouTube videos (don’t worry, they were marked as free and public domain) where the sound was clean. The tracker did an excellent job with it.
The panning should be determined by how it was recorded since that is how it is hitting the overhead mic and not by any graphic. The graphics are not by any means an accurate representation of the kit considering that you can route any kit piece to its own channel and create your own panning rules, as well as select almost any kit piece as a replacement.
You’re free to change the rules and set everything up however you want to.
Simplest test is if you are seeing any MIDI info in your DAW. If so, then your drums are fine in that respect. Otherwise, you will probably need to see if there’s a MIDI driver for your eDrum, if it is not recognized as class compliant.
Considering that all of the SDXs made around the SD2 work seamlessly, I can’t imagine that you will have any real issues. You may have corner cases, but you can fix those with your own MIDI mapping in the MIDI/e-drum Settings, which is really that daunting.
Just remember, just because you are playing the drums in SD3 through the MIDI pad controllers, this does not mean that you have to physically play those controllers like a drummer would.
