AT&T Natural Voices are by far the best selling Text To Speech (TTS) voices on the internet.  If you haven't heard their Natural sounds, Listen Here.  There is also an interactive demo of some of these Here. 

Natural Voices support both SAPI4 and SAPI5 (Microsoft Speech Interface).  To get that great sound, each voice is build from about 600mb of sound samples.  Because of this, they typically ship on CD.

However, because high-speed broadband internet is now in such wide use, we've begun letting users download Natural Voices after purchase.  The conditions for download are:

1. You still have to buy them.

2. You MUST have high-speed internet.

3. You must be able to burn your own backup CDs, as the download links are temporary.

Since this isn't yet part of our normal process, if you'd like to download Natural Voices, you must purchase through our normal process at
http://www.nextup.com/attnv.html

After the order is complete, you'll receive and Order Number, or Order Reference Number.  When you get that, simply send an email to use at support@nextup.com, Tell us your Order Number, and let us know that you'd like to download it instead of having a CD sent.

As always, let us know if you have any questions with a quick email to support@nextup.com.  You'll be amazed how fast we answer.