Is it correct to put "Ale" on the begin of the sentence? Where should "ale" located?
It is. Ale could be located in many places similarly to English but. Typically in front of something that the sentence uses instead of something else (not X but Y = ne X, ale Y).
Pronunciation here is really bad... I didn't hear ale in the sentence
I can hear ale fine at both normal and slow speed, but your experience may be different. I often find it helpful to play a sentence again on slow, if something sounds strange or fuzzy at normal speed.