Ephesians 5:18-19 states: "And be not drunk with wine, wherein is excess; but be filled with the Spirit; speaking to yourselves in psalms, and hymns, and spiritual songs, singing and making melody in your heart to the Lord." In light of this command, I thought you might be interested in my relatively recent expansion in the free music downloads in the ecclesiology section of my website here. The entire 1650 Scottish Psalter is now available for free download, as well as many professionally produced psalm recordings and many recordings of congregational psalm singing. Several versions of Handel's Messiah have also been added for free download. A website with godly hymns for free download run by a world evangelist/missionary sent our by our church is also available, as are a goodly number of other resources. I have reproduced the links to some of the new stuff below; to see it all, use the link above.
On another note, I would encourage you to add as a supplement to your hymnal some of the songs on hell and judgment found in the hymnal of the great soulwinner and opponent of Charles Finney, Asahel Nettleton. Hell is a clearly Biblical thing to sing about (cf. Psalm 9, 11), but many modern hymnals have a huge section on heaven and not a single song on hell. Here are links to a few classic hymnals worth checking out (including Nettleton's) that are also linked to in the ecclesiology section on my website: