Thanks Onyros for the kind words, I appreciate.
And to all the people in the thread.

So after a long busy time, I've packaged the skins that Onyros found, it's in xmms-skins-others.

Also, based on the idea of qwerty12, I've remapped the hardware keys to + and - volume. Having some unexplained problem with pause but should be fine in the next hours, you'll have to update your application list and install version 6 of xmms.
edit:done

Capsule, did you manage? I have no way of testing for 770 or OS2007 sorry. OS2008 should work.

Btw I tried to run crossfade for gapless playing and I didn't manage. What's the trick?

Cheers