Since all tracks played on the RRRadio streams are released with some version of the CC-license, they can be downloaded for free. Do remember to respect the specific license the artists have attached to their tracks; there are differences in the ways these tracks can be used. For example, some license types imply you can not use them for commercial purposes, some imply if you use part of the track for remixing or sample it, you have to release your track with the same license. For more information, check out the licenses.