In Launchpad and Blocs Wave you can use your own sounds by purchasing either the Pro Features bundle or the Audio Import feature.
In Launchpad, to access the import function, tap on Edit and select Pad. In the bottom right corner, tap on the person icon. You can press the + icon to start a new folder, copy audio into the app, or browse for audio on your iPad.
In Blocs Wave, tap on the Browser and go to User, then press the import button on the top right corner of the browser. Imported files will show up in the User window of the browser after selecting the file.
At the moment, Groovebox does not support Audio Import for Drumbox or Preset Saving for synthesizer patches.