RSS Feed in Hot Scroller?

The scroller rotates Joomla articles only. Articles must be plain text. It won't show content from plugins that you used in the articles (such as RSS plugin).

You can use Scroller only if you "import" content from RSS feeds to Joomla. You can do it by copying content from other site to your site. Or you can use FeedGator component that imports content automatically. I have not used FeedGator recently... but I know it was possible.