1. Download Hydrogen Mac\Win http://www.hydrogen-music.org/hcms/node/21
2. Open your Biab drums folder bb\Drums - Applications/Band-In-A-Box/Drums or external drive.
3. Drag a wav/wma/aiff/m4a into RealBand (Set to same tempo first) or your DAW, if you set it to a 2 bar offset (-1****0****1****2**) you will find the bar numbers correctly from the Drumxxx.txt in the Drums folder.
4. Turn Snapping off, go to the end of the wav file.
5. Look at the bottom of the Drumxxx.txt and you will see the shots.
Bar number location in bold 1,289,0,543,1,90 (some RealDrum txt don't have the Shot hit name so just listen).
Click to reveal..
Code:
Shot{ Kick (applicable for Brushes & Sticks)  },1,289,0,543,1,90
;Shot{ Kick (applicable for Brushes & Sticks) },0,289,0,543,1,90
Shot{ Snare with Sticks                       },1,290,64,543,1,90
;Shot{ Snare with Sticks                      },0,290,64,543,1,90
Shot{Flam},1,291,128,434,1,90
;Shot{Flam},0,291,128,434,1,90
;Shot{ HiHat                    },1,292,84,380,1,90
Shot{ HiHat                     },0,292,84,380,1,90
;Shot{ HiHat Open                  },1,292,465,543,1,90
Shot{  HiHat Open                       },0,292,465,543,1,90
Shot{ HiHat Open 2             },1,294,49,815,1,90
;Shot{ HiHat Open 2           },0,294,49,815,1,90
;Shot{ Tom 1                  },1,295,385,1087,1,90
Shot{ Tom 1                     },0,295,385,1087,1,90
;Shot{ Tom 2                },1,298,34,1087,1,90
Shot{ Tom 2                   },0,298,34,1087,1,90
Shot{ Floor Tom                 },1,300,162,1087,1,90
;Shot{ Floor Tom                      },0,300,162,1087,1,90
Shot{ Crash                    },1,302,291,1904,1,90
;Shot{ Crash                           },0,302,291,1904,1,90
Shot{ Crash 2             },1,306,275,1904,1,90
Shot{ Crash 2                 },0,306,275,1904,1,90
Shot{Ride            },1,310,260,2176,1,90
Shot{Ride               },0,310,260,2176,1,90
Shot{ Side Stick                   },1,315,37,543,1,90
;Shot{  Side Stick                         },0,315,37,543,1,90

6. Highlight the hit by zooming in to get it at the very start then highlight to the end of the decay, use shift + click to fine adjust.
7. Right click track in RealBand > Save Audio Track (or selection)... to wav. Same in a DAW, save the section to hit name.wav
8. To create your own kit for each RealDrum you use watch: Create a Custom Hydrogen Drumkit & Hydrogen drum tutorial
9. Or, download the drumkit.xml (drumkit2.xml has more advanced options in it, remove the 2 to use) open an edit with NotePad++ renaming the Drums name to the RealDrums you are creating and add any extra hits by copying all between "<instrument>""""""""</instrument>" and paste it after "</instrument>" then insert the filename.wav and the Drum Hit Name and giving it the next ID number <id>12</id>.
You can add remove hits in the xml, just get the ID's in order.
10. Create a folder the same name as the RealDrums and place a copy of drumkit.xml
Click to reveal..
Code:
<drumkit_info>
    <name>BluesRockEv^</name>
    <author>PGmusic</author>
    <info>GeneralMIDI acoustic drum set made of samples from BluesRockEv^.</info>
    <instrumentList>
        <instrument>
            <id>0</id>
            <filename>Kick.wav</filename>
            <name>Kick</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>1</id>
            <filename>Side Stick.wav</filename>
            <name>Side Stick</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>2</id>
            <filename>Snare.wav</filename>
            <name>Snare</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>3</id>
            <filename>HiHat.wav</filename>
            <name>HiHat Closed</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>4</id>
            <filename>HiHat Open.wav</filename>
            <name>HiHat Open</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>5</id>
            <filename>HiHat Open 2.wav</filename>
            <name>HiHat Open 2</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>

		<instrument>
            <id>6</id>
            <filename>Tom 1.wav</filename>
            <name>Tom 1</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>7</id>
            <filename>Tom 2.wav</filename>
            <name>Tom 2</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>8</id>
            <filename>Floor Tom.wav</filename>
            <name>Tom Mid</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>9</id>
            <filename>Ride.wav</filename>
            <name>Ride</name>
            <volume>0.890000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>10</id>
            <filename>Crash.wav</filename>
            <name>Crash</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
        <instrument>
            <id>11</id>
            <filename>Crash 2.wav</filename>
            <name>Crash 2</name>
            <volume>1.000000</volume>
            <isMuted>false</isMuted>
            <pan_L>1.000000</pan_L>
            <pan_R>1.000000</pan_R>
            <exclude />
        </instrument>
    </instrumentList>
</drumkit_info>

Win: C:\Program Files (x86)\Hydrogen\data\drumkits\BluesRockEv^
Mac: User/Library/Application Support/Hydrogen/data/drumkits/BluesRockEv^
https://www.dropbox.com/s/9e7du815acv4by9/Hydrogen-drumkit-xml.zip?dl=1

You can create a new drum section to overwrite the existing RealDrums bars or Merge it to the existing section to add extra hits.
When you have finished creating the track you can Import it into the Biab Audio Track and move it to an Artist Performance Track if you like.
If you turn the Master volume right up before Export it should be the same volume as the RealDrums track.
On the Mixer don't have the Humanize or Timing up too much or Swing if it's even.
You can use Hydro to create your own RealDrums or UserDrums
http://realband.org/tutorial-drums1.html
http://realband.org/tutorial-utd.html

View Hydrogen PG Drums Full Screen
View RealBand Edit Hits Full Screen
View RealBand Hydro Replace Full Screen Bars 1 and 2 were replaced with Hydro RealDrums and they fit perfect.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Hydrogen-PGDrums.jpg (289.58 KB, 93 downloads)
RB_Save-Hits.jpg (326.45 KB, 91 downloads)
RB_Hydro_Replace.jpg (107.53 KB, 86 downloads)
RB_Merge-Replace.jpg (63.42 KB, 69 downloads)