You will find an excellent online repository of many Hindu spiritual texts here:

http://www.celextel.org/

Translations of the Sri Bhagvad Gita, various Upanishads, and many stotras are available here, along with the original devanagari in pdf format.

New updates to this site have been a long time coming! Unfortunately, life has been very busy, and is still busy, but I should be putting some posts up here soon!

-D