Z-Subsonic is an iPhone app developed by Olusola Abiodun, and is available for purchase on the App Store.
Access your entire music library from anywhere on your iPhone or iPod regardless of the size of your music collection. Play song formats that the iPhone/iPod will not normally play e.g. wma, flac, ogg. Delete or change song priority on the Now Playing list while songs are playing. Songs start with little or no delay. Queue the same song multiple times. Load playlists stored on the Subsonic server. Easily select any of 5 Subsonic server connections. SSL support. Favorites. Complete artist, album and song info caching.