Sound doesnt work

I like the variety of ways to practice the words and phrases but am disappointed that the sound option does not work. When I tap on option to hear the pronunciation, it just goes to volume control. Glad I tried the free version......Anyone else have a similar issue? BTW my sound on my ipad works great just not with this app.

DaisyTX512 about French FREE 24/7 Language Learning, v4.2.4