Style on chart vs. Player styles

[nimbleswitch]

I think I'm not using Styles optimally. I can designate a Style for a particular tune in that tune's Edit feature, but there is also a feature in the playback menu, right under the Play arrow, that allows you to select a Style. They don't always read the same. Does one override the other? Sometimes it seems like that happens . . . but sometimes . . . I 'm not quite sure what I'm getting. (Yes, I have all the Styles Packs.) So, what is the best way to select styles for playback? Thanks.