Anyone who views a story you share that features a song from Spotify will now be able to actually hear the track. Sharing your favourite music through Instagram just got easier and smoother, thanks to a small but fairly impactful update. Instagram has added audio previews for Spotify songs shared to Stories, finally letting people actually hear the music without leaving the app. Until now, sharing a track from Spotify to Instagram Stories would only generate a visual and a link. That meant anyone viewing the story would have to tap the link and be taken to Spotify to be…