Hello! I have problem with music after update on 4.4.4. Kitkat. Every time i play music in Walkman or Poweramp from sd card, music short stop and than play again, like short break 0,5 sec. When i play music from internal memory of phone is everything ok, music play smootly. Micro sd card is Sandisk Ultra class 10, write 30 MB/s. I try format microsd, another microsd, repair phone over PC Companion, still the same. Please fix it... I bought Sony M2 for surfing and listening music and now i cant enjoy in music.