first i am sorry to bug u guys again with something banal like this, but i am not able to do it by myself, so i need to ask someone else and i do it here since the origin of the problem seems to be the rep...
now to the problem itselve:
i soldered a line in cable for my ipod nano for recording dj sets on partys, wich works verry well with one exception: it is not realy possible to split tracks since the mapping of buttons is not really usable.
according to the manual track split works by a long press of play/pause button while recording, which effectively stops the recording because a long press is also a stop.
in my opinion it just should be mapped to a long press on select button for all ipod targets and the problem is gone. i already filed a bug report in flyspray here: http://www.rockbox.org/tracker/task/10207?project=1&type=2&order=dateopened&sort=desc
but it seems like the interest for this issue is not very big at all, so i decided to post it here again.