As much as it is an EXCELLENT tool for composition, the playback sounds absolutely horrible. haha
I know you probably can't do anything about it right now, but I'm going to say it anyway: look into a different program for the "finished product". I really like the composition though.
If you want, I could "cover" your unfinished song. Look through the stuff on my account beforehand though. It will sound less Gothic (think Industrial Rock or heavy Alternative) and have a few changes, but I'm willing to try to do a decent cover.
PM me back if you want to collaborate!