[Q] stock xperia Z walkman sometimes skip audio on right headphone? topic

Ok so i have a little odd issue with my xperia z walkman. im on a modified stock but even on regular stock and with any headphones very rarely and with 2 specific songs its more frequent. While listening to music the right headphone side would drop sound for a half of second, literally like 30ms. i was wondering if anyone had this issue before?
also the music files are ok because they play on windows fine.