In the next release will be present the bbcode to embed SoundCloud track in post absolutely RESPONSIVE, tested on iPhone and iPad.
These are the instructions to embed video in post using bbcode:
[ soundcloud ]track_url[ /soundcloud ]
Warning: without spaces in the brackets (to avoid the interpretation of the bbcode I had to insert spaces between the brackets)
where track_url is the URL track, example: https://soundcloud.com/party-box-bcn/last-tango-in-paris-lounge-1
This is the result: