Anyone else out there started experiencing problems with Spotify?

I used to listen to Spotify offline through the red ami cable and iphone4 no problems. album art, skip, pause etc all worked.
The last week or so it's gone really inconsistent and I assume the only thing that could have changed is iOS or Spotify versions.
The music videos that used to play directly from my iphone have also stopped working so Spotify is probably a red herring, it's just what I use most regularly.