Help Music Skipping

[Sibelius343]

Hi, my Atrix is having some music skipping issues. It doesn't happen every song, but it happens often enough to be annoying. One time, a song even skipped twice within around 2 seconds. I'm using Poweramp as my media player, with the buffer size set to huge. Using the other buffer sizes doesn't make a difference either. Does anyone know what could be wrong? My Atrix works fine otherwise; it runs apps and games very well. Thanks in advance!​