This is absolutely wrong IMO. Producing music is a talent that should be paid for. And hosting a 'Competition ' with no prize is insulting to everyone involved. Or let me guess, the winner will get great exposure?
Provide documentation that RD is a registered non-profit, or else get used to people getting angry when you beg for free things.
Oh do shut up - there's plenty of us that enjoy messing around in Logic, Ableton, Garageband, Gadget, whatever, for the sheer hell of it, and never expect, or want payment for our "efforts" - a few likes on Soundcloud would be more than sufficient - actually one like would do me.
Besides it's down to personal choice as to whether somebody submits music to RD for this, and as a "crap" hobby producer I for one am not insulted by this request and I would gladly submit something if I had the time.