Another RK2706 player is on the way, the Teclast M30.
It appears to include the wolfson (WM8987G) audio processor too.
http://www.teclast.com/zhuanti/m30/canshu.html
It also appears to have an FM radio which should please many.
Regarding album art on the RAmos 970 maybe you need to copy a small .jpg
into the music directory? maybe someone who has one of these players could try this and let us know? something like album.jpg or folder.jpg may work, I suspect that this player doesn't support embedded album art but needs a seperate .jpg file. (or a firmware update?)