Put the seeds in the refrigerator (not freezer) for 2 weeks to cold stratify them. Then get a propagation tray that you can put a couple of inches of decent quality potting soil in, moisten the soil, distribute the seeds evenly, cover with no more than 1/4" more of soil. Supply a little bottom heat; keep a dome on or even Saran wrap to hold in the moisture. Add a little water if the planting medium begins to dry out. Hopefully you will get results in about 30 days or less.

I've also had good luck inserting seeds into those compressed peat pellets that you moisten. Treat the pellets to the same conditons described above.

Firstly, I am no expert on germinating Bamboo. Nor have I been at it long. But I do have experience.

I find peat pellets and standard potting soil horrible for germinating bamboo or any other seeds that require more than a week for germination. They retain way too much water, and don't allow enough oxygen to the roots. Thus causing them to rot, or have the seedling dampen off if they do eventually germinate.

I have had good luck with regular potting soil for moso but I don't recommend it.

What I do recommend is using about a 10 - 20% coarse sand (not play sand) in potting mix, mixture. I currently have some F. Nitida, and B. Arundinacea that have just recently germinated in this fashion. I think I spotted some taproot activity in a batch of D. Membranaceus today as well.

Another fellow Boohead uses play sand and it works fine for him. I have some P. Heteroclada in 100% coarse sand, and another batch of the sand/potting soil mixture described above. It's too early to tell results, but using methods described above, have only netted me rotten seeds.

Here is a link that might be useful: Hardy Outdoor Exotics