Good day jogo1955,
Thanks for participating in the Apple Support Communities.
It sounds like you've created a new website for your podcast, and want the new website url to be reflected on the iTunes Store.
Make sure you've added the URL to your SoundCloud settings to the “You on the web” section of your profile, as mentioned in the SoundCloud Help page How do I link to my website for my podcast instead of my SoundCloud page?
Did the location of your podcast RSS feed change as well? If so, see the SoundCloud Help page How can I redirect subscribers from my SoundCloud RSS feed to a new RSS feed hosted elsewhere?
Any changes to your RSS feed can take up to 24 hours to be reflected in the iTunes Store.
Your podcast information shown in iTunes comes from the RSS feed, and there isn't a way to administer a podcast directly. For more information, see iTunes - Podcasts - FAQs: For Podcast Makers.
No, the iTunes Store does not host podcasts.
You must host media files and RSS feeds on your own web servers or use a third-party web hosting provider. You can then submit your podcast feed for inclusion in the iTunes Store podcast directory.
A podcast feed is a URL to an RSS (rich site summary) in XML format. RSS is a technology for announcing updates to a website, and XML is a format for creating content on the Internet.
To publish a podcast in iTunes, you must first set up a website that generates an RSS feed. When you update the site that hosts your podcast, the RSS feed notifies iTunes that a new episode is available.
Best Regards.