I am guessing you are using LW 5. You'd need to use the advanced search under Tools menu to do an audio specific search. Click on Classic view top right, then right-click on column bar & show extension.
http://www.gnutellaforums.com/new-fe...tml#post338459
After downloading the mp3's you'd need to burn to CD-R as an audio type disk, not an mp3 disk. Should be able to fit up to 74 mins on a 650 MB CD-R, or up to 79 mins on a 700 MB CD-R. iTunes & WMP have burn to disk abilities. But Nero is probably best.