1. A method for customizing input data for a language model in a speech recognition system, the language model having a predetermined data format for receiving words and/or phrases to be added to the language model, the method comprising: providing a graphical user interface (GUI) that allows a user to specify a plurality of words and/or phrases in a first format independent of the predetermined data format of the language model; and automatically converting the specified plurality of words and/or phrases in the first format, via at least one computer system, to language model input data in a second format compatible with the predetermined data format of the language model.