Hi,

I would like to know how to embed the now playing (artists, song title) into an Drupal block.

Is anyone using a front end (such as Drupal) for their Centova Cast site?

I've never used Drupal but as long as it allows you to paste HTML code into its blocks, you should be able to paste in the code snippets provided by Centova Cast and it should just work.  The snippets are designed to be as flexible as possible so they (hopefully) shouldn't conflict with anything.