Podcast
Podcast is an audio bit of information. You can offer your visitors relevant, unique and interesting podcasts that would set your company apart from your competitors. In SEO terms podcast is another great way to drive traffic to your website and to get inbound links.
You should optimize your podcast for your target keywords, use them in podcast description (transcript) and in header.
To promote your podcast go on social networking sites and podcast directories which your potential customers might visit.