Hopefully A Simple Question

Alright, I’ve redesigned my site to make it 100% xhtml compliant. But, I want to add YouTube videos and Imeem songs in the sidebar. I’ve spent 3 days installing various plugins floating around, some work, some don’t, many will only let you embed into a post or page, again, I’m wanting to embed into the sidebar and keep it xhtml compliant. Does anybody know of a plugin or two that will allow me to post YouTube, Imeem or any other music/video service into my sidebar and still allow xhtml compliance. Thanks in advance for your input.