Small skip on iPod app . . . ?

[shoehorn]

I'm getting a small skip on my songs my iPhone (less than half a second), occuring at the end of each track - it doesn't happen on any of my other MP3 players.
- I guess I could describe it as a 'blip'
Anyone else had/got this ?
Anyone any ideas ?
- it's a bit annoying!
(oh, 1.1.4 unlocked with ZiPhone)

 

[Everlong.101]

Yeah i get this on my ipod touch as well.