If it's speech-to-text services you're after, Vocapia Research is in the game, offering a variety of speech technology services and working with their clients to adapt, fine tune or create products that are relevant for specific applications. One of Vocapia's products is the VoxSigma speech-to-text software suite that is suitable for many languages and a variety of audio data types. The VoxSigma API is available as a Web service via a REST API over HTTPS.
We see a lot of mashups (our directory lists over 4,300 mashups). Lately we've noticed that they've moved beyond your ordinary application. Here is a quick overview of some recent additions that are fun and useful.