[Freeswitch-users] mod_skypopen - prereqs for Jessie?

Following this: https://freeswitch.org/confluence/display/FREESWITCH/mod_skypopen <https://freeswitch.org/confluence/display/FREESWITCH/mod_skypopen> Getting errors such as: E: Package 'gcc-4.7-base:i386' has no installation candidate E: Unable to locate package libavcodec53 E: Unable to locate package libavutil51 Can anyone tell me how to install the prereqs on Jessie? Or am I missing a repo or something? deb http://ftp.uk.debian.org/debian/ jessie main contrib non-free deb-src http://ftp.uk.debian.org/debian/ jessie main contrib non-free deb http://security.debian.org/ jessie/updates main contrib deb-src http://security.debian.org/ jessie/updates main contrib deb http://files.freeswitch.org/repo/deb/debian/ jessie main