Tangomp4

When Tangomp4 refers to a specific, unique entity known to the audience (e.g., "I downloaded the Tangomp4 update").

Generally not used unless it is part of a phrase like "a Tangomp4 converter" or "an atypical Tangomp4 file". To give you the most accurate answer, could you tell me: Tangomp4

In general, do not use an article with a proper noun unless the noun contains a prepositional phrase. Massachusetts Institute of Technology Articles and Proper Nouns - MIT When Tangomp4 refers to a specific, unique entity