I only have errors when using high resolution material in itunes mode. Playing stops and a buzzing noise comes up.
These are SACD rips in 24 bit / 88,2 KHz which are upsampled to 24 bit / 96 KHz.
All MP3 / AAC and Apple Lossless files up to 16 bit / 44,1 KHz run smooth without any stops.
Would be interesting if anybody else has experienced this too....