I've struck a problem...

I've hooked up my drum pads to my Alesisi D4 - works great - but the D4 internal sounds aren't so great, so...

I connected the MIDI out of the D4 to my EMU sampler hoping that I could use the drum pads via the D4 to trigger some great drum samples I've got in the EMU sampler, but.

when I hit the drum pads, it only triggers the first part of the sample for a mini millisecond (as long as the duration of the hit on the pads).

What am I doing wrong? Some of the samples are 0.5 secs or longer with room ambience, etc.

Anyone please help!