Protools for audio recording
logic for sequencing midi/audio
peak for editing
recycle for doing all recyclie type stuff
I also like reason for making loops
in my very arrogant opinion you should bypass all the wannabe software and use pro audio stuff, it really does make a huge diffrence.
When you learn the more complicated stuff straight away it gives you a much greater understanding of computer sequencing, so when you come across the more commercial ones like cakewalk they seem puny in comparison whereas if you where to learn cakewalk or fruityloops first you may find yourself daunted by logic and pro tools.
if you just wanna quick fix then try
music 2000 on the playstation.
by the way stienberg should learn to test there software before they release it, ten years ago they were innovators now there just sad old men.
Admitedly I havent used sx yet, but the way things have been going for them I would'nt be suprised if they went out of biz in the next year or two.