How can i connect this 2 units?

Tomorrow i want to play at our christmas party music with my big PHILIPS amplifier.
(Need the microphone too).
It owns a line in:


I want to connect it with this egg (because of MP3 and USB):


It owns a AUX and Headphone jack.
How can i connect it?
Means AUX > Line out?
Or Headphone to LINE IN?
Last combination would be with a adapter cassette.

How would you do it?

AUX should be in...but you can try headphone as line-out but keeping it at non distorting levels with the volume control...

Thanks, i will try so..

Just working great.
Ugly meets Power!