The stand-alone mod S.T.A.L.K.E.R. Anomaly aims to be the most stable and customizable experience for fans of the S.T.A.L.K.E.R. games. It's powered by the Monolith 64-bit engine, a custom fork of the X-Ray engine.
This is an edit of the original sound volumes to quieter levels and quicker track switching for the mod posted by Chimo69 and their fantastic "Mashup Combat Melodies Mod"/Это редактирование громкости оригинальных звуков для более тихого уровня и быстрого переключения треков для мода, опубликованного Chimo69 и его фантастическим "Mashup Combat Melodies Mod".
the mashup combat melodies mod isnt aviable :(
I'm not sure why the link is not working but here is their mod Moddb.com