Sansa Clip Zip - clicks in right channel

[aknuds1]

I just installed RockBox for the first time, on my Sansa Clip Zip player. I got version 74af18e-120617 (there doesn't seem to be any stable version?). Unfortunately, I get frequent (every second or so) clicks in the right channel The volume of the clicks is dependent on the playback volume. I'm listening through a pair of Sennheiser CX300 II. If anyone has a solution to this problem I'd be very grateful!