Custom "group" for Player next/prev keys

I use XiiaLive in the car with a Bluetooth puck that has next/previous keys, and In XiiaLive I see there is a setting to choose either Favorites or Playlist for the keys to cycle through. But for the life of me, I can't see any way to add only certain stations to the Playlist, long pressing on them doesn't bring up an option to do that, and there doesn't seem to be a Playlist tab anyway to select from.

So the only option I have to cycle through stations is Favorites, which works fine, but I have a lot of stations in my Favorites that I don't necessarily want to cycle through when in the car. Some of them are the same station, but different streaming rates, eg 192k for when on wifi, and 32k for when on a low-bandwidth connection; some are music, some are talkshows, some are comedy, etc.

In the car, I would just like to be able to cycle between maybe 3, 4, 5 or 6 stations, but with the current settings I can only cycle through ALL of the favorites, which might be 30 or 40 stations, as I noted some duplicates etc.

It would be great if there was another special group called "Skiplist" or something like that, where I could put copies of a few of my favorites in to skip with the media keys, while retaining the listings in the overall favorites list too.

Either that, or please explain to me how to accomplish the same thing with the already existing "Playlist" option for the media keys, but that doesn't actually seem to me to have a way to use.

Thanks!

BTW... this is probably the *best* android app that I have out of a couple of hundred! My favorite and would be on my desert island list for sure!