Out file from tar.gz and you see iptvplayer-for-e2.gi...also open and see IPTVPlayer move to correct directory with DCC and if need change also setup.py & setup_translate.py...Or with plugin E-Panel from 2boom instaled. This plugin accept instaled tar.gz
or
How to install IPTVPlayer using console
Simple
wget http://iptvplayer.pl/iptvinstaller.sh -O - | /bin/sh
Advance
rm -rf /usr/lib/enigma2/python/Plugins/Extensions/IPTVPlayer
cd /tmp
wget http://iptvplayer.vline.pl/download/update/latest.pythonX.X.tar.gz
tar -xzf latest.pythonX.X.tar.gz -C /tmp
rm latest.pythonX.X.tar.gz
cp -r iptvplayer-for-e2.git/IPTVPlayer /usr/lib/enigma2/python/Plugins/Extensions/IPTVPlayer
rm -rf iptvplayer-for-e2.git/IPTVPlayer
sync
reboot