The soundcloud resolution is hit-or-miss, and I would be interested to see youtube in there, but the "auto-redirect" option is solid; if you managed to figure out a "cookie-dependent embed", where the auto-redirect setting also decides which service's player to embed in Twitter or Discourse, this would be magical.
That's a good idea, I'll investigate some sort of embedding strategy that would support that!
One if those things where I always knew eventually someone would make it, and I'm grateful.
e.g. Share this Apple Music song -> Beatnik -> send to friend with Spotify
Alternately, I'd love to be able to tweak the parameters of Soundcloud's recommendation engine, so that it was less like "You listed to 3 songs like this last week... here's 25 more songs very similar to those."
I know they acqui-hired Paul Lamere (of Infinite Jukebox and Boil the Frog fame), I'd love to be able to get automagic "everything-in-between" for a variety of songs from my recent past. My tastes trend broader than they do deep, though, so I reckon I'm an outlier.
Music discovery has always been a hard problem, but I think AG back in the day had it mostly solved.
(Edit: fixed the spelling of Paul's name.)
But considering all the P2P tech I'm sure someone could create an open-source Spotify replacement if they did it right.
(for a second I saw the title and thought it was a grooveshark like service, those were fun days)
I use YT/YTM (I have GPM subscription but have been trying to transition to the YTM ecosystem because believe they'll be migrating GPM to YTM at some point and figure it will be less painful if I do as much as possible in YTM), but most of my peers use Spotify, so if I want to share a song I'm listening to in YTM, I have to open Spotify and search for the song or album and grab the Spotify link, which is a pain in the ass.
Realistically though, how is grabbing the YTM link (once you support it), and then inputting it into you app/website, to get a different platform link, any faster than my current process? Unless there is some kind of plugin to your app in the various music clients (which I doubt would be allowed) ?
I've been meaning to look into MusicBrainz, I definitely intend to do some integration with them.