ő = he/she/it
ön = you (singular, formal, the verb is conjugated as third person singular)
When talking to your boss (for example) you use 'Ön' but for a friend use 'te'
Just one facet of any language spoken at normal speed you have to get used to, I suppose. At least Hungarian is one of the more discrete languages unlike, say, French, with its liaisons and numerous homophones.