Listened to your track on looperman... (Why is it banned here... did you sent a mail to magix..?)
Like you said already... some sounds are too loud and sound "dirty" (overmodulated)... but you work on that.
What I noticed in the begining of the track are your changes (adding sounds)... for electronic music which works in 4/4 Beat... changes should always be after 4 (8, 12...) repetitions... otherwise it just doesn't feel right.
To end a track without cutting it off... you might wanna put one sample at the end (longer than your track)... put it on 0 db volume. Leaves a few seconds to breathe and won't cut out any echo there might be...