Sundry Bayreuth 2016 archived audio, as we find them:
Parsifal via BR-Klassik (and the video here, which was still working in the US as of two seconds ago)
Das Rheingold via BR-Klassik
Die Walküre Act 1, Act 2, and Act 3 via Radio Clásica
Siegfried Act 1, Act 2, and Act 3 via Radio Clásica
Götterdämmerung Act 1, Act 2, and Act 3 via Radio Clásica
Der fliegende Holländer via BR-Klassik
The BR-Klassik archive has muy cherno sound, but their website wins the Lord Franklin Prize for Unnavigability -- if you get lost, remember seal meat is delicious and nutritious.
If you're looking for tomorrow's Tristan, once again Bucharest has your back at 9:50am ET.