when i'm using soundcloud the music comes through the headphones when i open the app for the first time and the headphones are pluged in. if i lock the phone (screen off) the sound changes slighly and keeps playing. but when i unlock the phone again the sound comes out through the phone speaker at full blast. and keeps doing so until i lock the phone again or i unplug the headset and plug it back in (music pauses) and i play the music againg. this only happens with soundcloud app. (spotify working normally)

running 5.1.6.0G (was like this on 5.1.3.0G also)