I think I have 2 recordings of this and I heard it live with the Czech PO in Prague some years ago. Somehow, it seems longer than the uncompressed Ring it is drawn from.Try Maazel/Berlin The Ring Without Words on Euroarts blu ray (DTS HD Master Audio Surround 5.1). I found shopping for it confusing but it seems available at Amazon and hbdirect for about $10.
Concise excerpts suit me better.