pjtibayan offers a collection of Shepherds’ Conference audio downloads from 2001-2008 here.

For those not aware, the Shepherds’ Conference is an annual conference organised by the Shepherds’ Fellowship, who describes itself as

The Shepherds’ Fellowship is an association (not a denomination) of churches rallying around the authority and sufficiency of Scripture, the importance of expository preaching, and the centrality of a biblical philosophy of ministry. The Fellowship serves as both a resource and an encouragement for pastors and Christian leaders around the globe.

This conference boasts the likes of John MacArthur (founder of Shepherds’ Fellowship), John Piper, Albert Mohler, Mark Dever, C. J. Mahaney, Ligon Duncan, R. C. Sproul, etc.

And guess what? It’s absolutely FREE to download. 9 years’ conferences worth of audio sessions, all downloadable. All you need to do is register for a free account. You can also pay to order the audio CDs and video sessions.
Shepherds’ Conference – Media Vault