sounds that overlap in loops-tracking to DAW

so this should be a pretty straightforward question, we'll see.

i usually finish most of my songs in my MPC before i track them out into my mac, and when i track out i either MIDI sync the two for timecode or sometimes i do the old "insert a bar at the beginning of a sequence and add a hi hat note to each track" trick, then just line up the hats in my DAW.

but a problem i've been running into more often now is this...

some of my newer tracks have sounds that overlap the end loop point. but in the MPC they play fine, like a sound will trigger and then trail off past the end of the loop, but the sound won't cut off once the loop goes back to bar 1. thats awesome, but when i track out my sounds, it's not the same. like let's say a really echoey piano, that will play flawlessly in the MPC, but when its made into a 4 bar loop in my computer, the sounds don't carry over obviously because it's only 4 bars of audio.

i've gotten around it once or twice, for small things like crash cymbals, i just make two loops. but now the main samples of my songs are having that problem. i'm wondering how i can get a perfect loop that won't cut off all sounds after the end of bar 4 (or watever the last bar is). simple solution would be to just not create loops and have the sound record for like 3 mins, but then i loose a bunch of flexibility.

anyways, any insight would be much appreciated. thanks

When you track out your sounds SEQUENCE BY SEQUENCE, you must remember to allow extra time for the RELEASE section of the sample to play out.

So for example your four bar MPC loop may become a five bar loop when you track it out, the extra bar of material is the RELEASE.

Use seperate tracks if you must or just allow your audio regions to overlap when arranged within your DAW.

You can also play around with your ADSR envelopes and polyphony settings to make adjustments to the RELEASE of your samples.