Hi, and thank you for your interest!
Open Media Player is being translated using Weblate, a web tool designed to ease translating for both developers and translators.
Translation project for Open Media Player into English (United Kingdom) currently contains 84 strings for translation and is 3.5% complete.
If you would like to contribute to translation of Open Media Player, you need to register on this server.
Once you have activated your account just proceed to the translation section.