Zamzar is one of the best, freely available service that helps you convert your text documents to mp3 format.
Some sharewares available in market are:
1> Yeosoft Text to MP3 Speaker:
Beauty of this software is that you can translate the content into 10 different languages (English, French, German, Russian, Dutch, Spanish, Japanese, Portugese, Italian and Korean).
You can download a trail version for free, and buy the license for $19.95
2> Alivemedia’s Text Speech is a good option.
It makes use of the microsofts text to speech engine, and the text can be converted to various formats like MP3, WAV, Vox, OGG files.
It is compatibale with Windows xp and also with Windows Vista.
i downloaded music online, but got saved as document. How do I convert it to mp3 file?
@Bobcat – thanks for adding to the list anne.
Thanks for the informative run-down on how to convert text to speech.
Another great text- to-speech serive is VoiceForge.com. VoiceForge, run by Cepstral, has 60 different voices so choices are almost limitless. Cepstral owns the underlying TTS engine – an important piece of the puzzle if you really want to command the technology.