1. A method for establishing an audio a conference via communication devices associated with participants conversant in different languages comprising the steps of: (a) receiving a request for establishing an audio conference between two or more communication devices each associated with one of a plurality of different languages, wherein one of said different languages represents a main language; (b) providing an interpreter for orally interpreting between each pair of said main language and one of said different languages other than said main language; (c) connecting for each of one or more of said communication devices associated with a different one of said languages than said main language with a communication device of said interpreter provided for interpreting between said different one of said languages and said main language to enable the communication device of the interpreter to receive voice communication from each of the one or more of said communication devices associated with said different one of said languages; (d) connecting the communication device of the interpreter associated with each one of said different languages than said main language with one or more of said communication devices in the main language to enable the communication device of the interpreter to receive voice communication from said one or more communication devices associated with the main language, in which each of the communication devices are connected to a computer system which enables said connecting steps (c) and (d); and (e) controlling the communication device of the interpreter associated with each one of said different languages than the main language during oral translation by the interpreter between said one of said different languages and said main language as to which one of (i) one or more of said communication devices associated with the main language connected to the communication device of the interpreter at said step (c), or (ii) one or more of said communication devices associated with said one of said different languages connected to the communication device of the interpreter at said step (d), receives voice communication of the interpreter in one of said main language or said one of said different languages, respectively, in which said controlling step is carried out by the interpreter at the communication device of the interpreter for at least one of the one or more different languages than the main language over a single voice communication line between the communication device of the interpreter and the computer system.