In the past when I've sold something that required freight services I had the buyer arrange all of that, though I spelled that out in whatever listing I had. All I did was palletize it and make sure it wouldn't get damaged then waited for them to send me the BOL and hand it off to the carrier. Like John said, you'll want to use an LTL service. Pretty much all major carriers (Estes, UPS, FedEx, R&L, etc) do LTL so you can either go through them directly, or try using a broker like unishippers or freightquote.
Just how big is this console? If it's bigger than 40x48" you may have a hard time finding something off the shelf (or a generous loading dock) that will fit it. Large format print shops usually have a lot of oversized pallets, so you could check there too. You can also cobble together your own pallet fairly easily using bits from other pallets and those roofing joist tie plates. I'd highly recommend putting a solid sheet of plywood on top of whatever you use to act as protection, I've seen forks puncture things from underneath pretty often.
With that sorted, make a wood frame around it then add either wood or heavy cardboard panels to keep other stuff out. If you're feeling extra cheeky you can get some tip-over/shock labels for it to be sure that it's not manhandled. Not terribly cheap but good for any potential damage claims. Speaking of, whatever carrier you go through BUY THEIR EXTRA INSURANCE if they offer it. It's worth it.
