I just don't get it!!!

I've got an SP404sx and I'm trying to record to new pads whilst my exisiting samples are playing still. Nothing in manual as far as I can see, any ideas?

can't do it, you gotta find a work around (seperate metronome in some ear buds or somethin, or record the sample you want to play over somewhere else, like out to tape, and play that in your ears while you play the other one....just one of i'm sure many solutions)

thanks man

You mean like resampling your pattern? Nope, can't be done, unless you use an additional piece of recording hardware.

I must say though, if the whole issue is maintaining a consistent beat when making your patterns, I would recommend using the pattern copy and erase out pads you don't want to have in your new pattern.

Using that approach you can continue to build upon what you had already.