Nila,
It's not useful to me either...but you can't draw the track info text vertically (yet). So, the 'corners' theme has to be this away (for now).
Also, I liked the old MJ 7.0 default skins for what you are trying to do.
Here those old skins are if you want download, unzip and try them out (JRiver authored these...not me...I liked one them and used it to display a nice thin, uselful mini-me skin across the top). I've not used these lately, but they once worked with MJ 8.0 betas and may still.
---
MH,
I doubt I'll get it out tonight...to busy with real work. It is all working, but I want to make sure the shared main.xml file still works with LowerLeft and LowerRight...so need lots more testing before release. Maybe it'll be this weekend (sorry...real job is getting in the way).