Wellll, this is now the question as SC has it's revised it's free tier to limit to 15 tracks or 3hrs (whichever is hit first). Boo SC!
I've only got around 40mins of tunes, but spread across 35 tracks. So, while I understand I'll not lose any currently uploaded tracks, I can't add anymore (without going PRO - which there is absolutely no incentive to do)
Reddit reccomends Audius.co as a alternative (Here's a Engadget article - I just tried it...Hmm, colour me throughly underwhelmed. Couldn't play one track through without buffering - in fact not one track completed playing start to finish. Signup wasn't overly painful, but you know that their target market is equipped with decks and a twitter account....sigh.
I guess I'll be cleaning up my SC account for now. Likely Audius will sort out their blockchain playback in time (I guess they don't have africa friendly nodes yet?) - might be interesting to see how many people migrate across to other platforms?
One we havn't yet mentioned is Spotify - apparently free to upload, though I'm not entirely sure how it all works. Seems to be overkill just to host a few tracks for shifts n giggles.