Fabio, don't introduce dpatch, but apply your patches 'inline' and post the .diff. Ubuntu mplayer is 'maintained' using bzr (https://code.launchpad.net/~ubuntu-dev/mplayer/ubuntu) and this is why dpatch stuff was dropped since edgy (see debian/changelog).
If this issue is also in current development version (gutsy), it needs/should to be fixed before the stable version (feisty).
Fabio, don't introduce dpatch, but apply your patches 'inline' and post the .diff. Ubuntu mplayer is 'maintained' using bzr (https:/ /code.launchpad .net/~ubuntu- dev/mplayer/ ubuntu) and this is why dpatch stuff was dropped since edgy (see debian/changelog).
If this issue is also in current development version (gutsy), it needs/should to be fixed before the stable version (feisty).