@brnwbasti
I like Lstar’s moviesheets too, but I have not attempted to get them working for the SMP. They were not designed for the SMP - therefore there would probably be a lot of compatibility issues. But I suggest taking a look at this thread for more info.
Thumbgen is pretty easy to use once you get the hang of it.
Thumbgen Tutorial http://community.wdc.com/t5/WD-TV-Live-Hub-Themes/Video-Tutorials-nOOb-Centeral/td-p/283846
I doubt there’s ever going to be a fix for .png files. Apparently .png has been broken for quite a while.
There’s a lot of information floating around about this issue. HUB owners have to do a FW rollback to get .png files to work. SMP users simply cannot use proper .png’s at all.
Show your support here:
The more people that voice their concerns over this issue the higher probability that it will get fixed, so spread the word, otherwise forget it.