No Password Promt in iTunes? Workaround
A bug in the new iTunes software is preventing some listeners from subscribing to a password protected feed when using iTunes. If you are experiencing this problem please use the following work around:
1. Follow step 1 thru 5 above. Once at step 6, after "http://" type in your username and password, separated by a colon ":" followed by an "@"
Example: http://username:password@www.redicemembers.com/rss/rss_radio.php

2. Click OK and follow the rest of the instructions