as muh as we'd dream to see it, the current renoise is out of the question for appearing on the pandora. now, if the pandora community really showed interest in the app then maybe the renoise devs would be willing to consider a 'lite' version. but even then we should not expect anything cheap, even less so free (for those unfamiliar, renoise is a commercial DAW - digital audio workstation - app, in the <100usd range).