What you would need to add in PowerPress would be the direct link to the audio file. Your RSS feed doesn't actually contain the code for a player, because the feeds are normally used to download files into a player (iTunes, Windows Media Player, your iPod), so the feed just encloses the actual media file.
You might be able to get the enclosures to show up if you used a plugin like https://wordpress.org/plugins/rss-post-importer/, which includes the full RSS feed content, but I think if you want the player to show up you will probably need to get embed codes from Audio Acrobat.