I learned from a pervious tracker I worked with before, that it can make a difference in the playback of your track. This used to be a huge problem back when you had Cubic Player, the old ModPlug Plugin, MikMod Player, YAMP, DeliPlayer, WinMOD, etc, etc...

At least now you can now figure out how it will sound before moving on to something else that might not sound 'right' in the track either.

I'll try to put together a 'player' or sorts to test your work in to see how it'll playback. What OS platforms do you have available to you?