Want some worthwhile music to listen to? How about old famous hymns, rendered by skilful singers who love what they're doing and are singing for the glory of God?
www.songsandhymns.org has a large number of hymns represented, and for each one you can access an MP3 file of people singing it, the music score in GIF format (scanned in - the quality's not 100% perfect but you can read it), a text version of the lyrics (excellent for Google integration - if you get a deep link to the Lyrics page, you can access the rest from there), the story behind the hymn, and a devotional piece relating to it.
They've recently undergone a bit of a web site revision, so deep linking may not be working at present, but that will settle down somewhat over a little while as the site gets reindexed.
A good hymn to start with is Guide Me O Thou Great Jehovah which has a spectacular rendition.
If you enjoy singing harmonies (as I do), these make excellent backing. The chords are clearly audible in both the accompaniment and the singing.
To God be the glory!