I will go into simple steps here as well in case I missed something.
1. Download iExplorer (Windows and Mac) http://www.macroplant.com/iexplorer/
2. Install it
3. Connect your iPhone/iPad
4. Open iExporer and browse to the Beatmaker 2 folder
5. Open the fold Documents/user/
6. Install samples here via drag and drop
7. Open a drum sampler in Beatmaker 2
8. Choose the wavelength icon in BM2 then click on a pad you want a sample to load into
9. Browse to the folder "My Content" when loading a sample
10. Rinse and repeat for other samples
11. Jam the hell out!
Next video will have a sample beat and fooling around.
EDIT: Ever since my iPad has been stolen or misplaced, I no longer support this video. Please refer to the next relevant source for additional info, as I have no way to support this information anymore. Sorry for the inconvenience.
EDIT: Due to the fact that my iPad is missing or stolen, I won't be able to assist in any further support. I apologize for the inconvenience.
However, if you do have problems using iExplorer, please refer to the iExplorer website, because that would be a problem on their end if it doesn't install on your PC.