xine-lib-1-rc2 (currently the latest unmasked version) does not support alsa-lib 1.0 and up... USE="alsa" emerge xine-lib Should get a xine-lib with alsa support. It doesn't. I had alsa-lib-1.0.3b installed. emerge "=media-libs/alsa-lib-0.9*" Gets alsa-lib-0.9.8 installed. Now xine-lib will compile with alsa support.
Created attachment 29532 [details, diff] patch to fix depstring for alsa
works for me with rc4 ... please try that version