From other formats, using cmd:alien 

fakeroot alien /linux/linux_bin/tgzs/mpgedit-0.71.49.7-1.i386.rpm
fakeroot alien --scripts autogen-5.7.2-5.i586.rpm
dpkg -i mpgedit_0.71-50_i386.deb
dpkg -P mpgedit
dpkg --purge mpgedit