Since this post the custom plugin keycode
I haven't tested it, but it should make it possible to use the keycodes of xperia with C2.
I added this topic to the how do I FAQ
under the section "General/misc. questions".
For now there doesn't seem to be a lot of topic about the Xperia. If more pops up, I might make a section for it in the FAQ.
Sounds good to you ?