Here’s something I’ve been waiting for — Slidecasting. It’s a creation of which enables one to synchronize PowerPoint slides and audio files.

To create a slidecast, you upload slides to The associated audio file can be hosted anywhere on the web. Then you link the slides and audio by using an online synchronization tool. When someone plays the slidecast, the audio is streamed from its location and plays with the slides. And it’s free. I’ve seen some examples, and it looks good. The only question is: where’s the catch?