If you can wait for the Monday following the Saturday airing on The Hub, you can buy em on:iTunes https://itunes.apple.com/us/tv-season/my-little-pony-friendship/id975102064
or Google Play https://play.google.com/store/tv/show/My_Little_Pony_Friendship_is_Magic?id=0BJwM9q_nyI&hl=en
They also include soft-subtitles.
We've been getting them through iTunes, and have a PC hooked up to an HDTV, to watch em without commercials, watermarks, station logos, or banners.
If you wanna be cheap (or you are region-locked or something? I dunno?), and do a torrent thing, look for the ones that say "WebDL" and/or iTunes and Subs or Soft Subs, or something like that, in the title or description.
OHMYGOSH I just checked Amazon, and they have Season 5 episodes, too! Well, the first three episodes, as of this post that's all that's aired so far. Dunno when they get em. Today is Wednesday.
If you got Amazon Streaming already set up on like a Roku or PS3 or something, you'll be good to go.
They charge 1.99 an episode though, or $49.99 for a season Pass.