How to play xiph.org audio codecs in iPhone/iOS?

I have music encoded in Vorbis format and also starded encoding some of my albums to the new Opus format. Is there a way I can copy and play them to my iPhone ? xiph.org wiki page states about vorbis support, that in the free software side, it's "work in progress", while it cites a radio stream and a video application that have Vorbis support, but what about audio support ?

To summarize the requirements:

• Vorbis support
• Opus support
• some way to copy or make the album available
• free software would be a plus, since proprietary software could be slow to adopt Opus and I could even add support for additional codecs myself by writing patches

[Edit: essential media player features required]

• Playlist support, etc.
• Flawless playback must be a strong guideline (for example, some players have audio decoding glitches every 5 minutes played)

http://wiki.xiph.org/Vorbis_Software_Players#iPhone

Capriccio music player for IOS supports FLAC, APE, WV, MPC, WAV, M4A, MP3, OGG, AIFF, CAF, MID, OPUS

I've used it on all my IOS devices (including iPad 2/3/Air and iPhone 4 & 6) with FLAC encoded music and never experienced audio glitches.