Where to get some Synth/Percussion samples/instruments for Eurobeat composition?

[Ashbad 969]

I've been looking through the nets for hours now, trying to find some nice lead synth and percussion samples that could be made into Impulse Tracker (.it) or eXtended Instrument (.xi) format. I mean, I've found some, but they're short little samples that I can't get to sound normal when I loop them, no matter how I splice them. I'm looking for some to get into Eurobeat composition, I want to make a Eurobeat version of Pinkie Pie's "Welcome Song". Could anyone point me to a good (FREE) kit of instruments that would fit my needs?

 

As for extra information, I'm using OpenMPT (Open Mod Plug Tracker) for my tracker tool, and I'm not completely new to digital music composition, I've done lots of chiptunes with OpenMPT/Famitracker now; I just need some other instruments.