That is normal for many web sites. Emusic also wants credit card info as well for a free 14 day trial. Sounds similar to what AOL does with the free trial period they offer.
Here's a link that tells a little more about the company:
http://news.zdnet.com/2100-9588_22-5372121.html [This message has been edited by Stephenm52 (edited 02-26-2006).]