There are plenty of Add-ons that can be purchased and downloaded from our online Shop! The link can be found below:
PreSonus Shop - Add-ons for Studio One 3:
Note that it does not require only our Add-ons to add more content to Studio One, any MIDI, REX, .WAV, etc. can be used in our software. Make sure that the loops you are downloading from 3rd party vendors will work with our software before continuing to purchase them!