The file linked below is a docx with metadata for sermons found at Desiring God's website. When compiled, the resource will provide standard sermon indexes such as passage, date, speaker, etc., along with a URL to the sermon's audio/video and transcript at Desiring God. The sermon data will also appear appropriately in Sermon/Passage Guides. The sermons will appear in the resource sorted by date (with the first one being one of Dr. Piper's seminary sermons in 1971). An Index will appear at the bottom of the TOC panel with various metadata indexes. Compile the personal book as Type: 'Monograph'.
There is an older Piper Index on the forums, but I think it was done before the sermon metadata table for personal books was available.
For those new to Logos Personal Books, the compiled resource will not be available on mobile devices or the Web App.
https://www.dropbox.com/s/5bc2i71yonhspry/Piper%20-%20Desiring%20God%20Sermon%20Index.zip?dl=0