After a bit of a hiatus, it looks like Couch Music Player has made its way back onto the App Store. There have apparently been some tweaks made along the way as well. The dynamic playlist app has been made iOS 7 compatible. It's also received a fair number of tabs to help with organization that include Playlist, Genre, Composer, Podcasts, and so on.
You can grab the new and improved Couch Music Player now for the updated price of free.