Got an Octatrack? Contact Elektron support about getting the MkI sample pack; or the MkII Sample pack.
Check out a bunch of the commercial sample sellers; e.g. Loop Masters; Wave Alchemy; Black Octopus Sound; F9 Audio etc. they often have intro/freebie packs; and tasters.
And even more importantly, give these cats some money! They work hard to provide you with awesome samples and sound fodder. A sample pack or two will cost you a pittance, and helps them pay rent, bills and put food on the table.
The free packs still cost them money to provide to you; at least throw them some money to help with their costs.
I recommend buying a sample pack or two. Make sure it is a quality pack; with a wide variety of one shots; synths, drums etc. Not crammed full of synth/drum loops. Put that, and only that on your Octatrack and see what you can do with that. Enforce limitations on yourself and the instrument and see where your creativity takes you. All the below will cater for your needs/tastes.
Check these out for starters:
Check out the Future Music / Computer Music archives… download 63,728 free samples; all of which originally appeared on either a Future Music or Computer Music cover CD:
Check out FreeSound. Shed loads of samples.
Want a cheap / high quality DAW?
Check out Reaper:
Want plugins? I can point you in the right place for that as well…
Remember kids, support the cats who create the tools, software, samples and so forth that help you create music.
Without them, and their hard work, you would have none of the above. No excuse for pirating and torrenting now, is there?
If you can’t make music despite all of the above resources; with or without an Octatrack, nothing will help you I’m afraid. Downloading the latest and greatest VST; or a shedload of sample cd’s aint going to fix that.
And learn to master your tools… much better songs and albums then you will ever write, were written on much lesser gear. You should know your gear inside and out, learn it, master it, loving it is optional.
Oh… and most importantly, have fun