In many cases a Release Creator wishes to communicate previews for some (or all) of the Resources contained in a release. To effect this, two things need to be done:
Firstly, for each sound recording there have to be (at least) two binaries. Details on how this can be done can be found here. And, secondly, a set of specific Deals needs to be communicated. To explain this a ten-track album (communicated with 20 binaries: ten high quality ones (A1-A10) and ten lower quality excerpts (AP1-AP10)) is assumed.