you really want to know if they hear from Jesus audibly?
No they dont. Nor do they, or have they, ever claimed to. But every christian has the bible from which to derive their information... and it is holy spirit that gives understanding of what is written in there.
To know if holy spirit is operative, you need to look at the 'fruits' as Jesus explained. The fruit of holy spirit will manifest itself in a variety of ways...it will be seen in the love shown and displayed, faith in God and his word, adherence to his righteous standards and the operation of holy spirit will also drive christians to a very specific work....
Acts 1:8 but YOU will receive power when the holy spirit arrives upon YOU, and YOU will be witnesses of me both in Jerusalem and in all Ju·de′a and Sa·mar′i·a and to the most distant part of the earth.” Obviously the preaching of the good news is an operation of holy spirit...the spirit is also a teacher as Jesus explained at John 14:26 But the helper, the holy spirit, which the Father will send in my name, that one will teach YOU
So Jesus doesnt need to be physically present, he doesnt need to speak directly to anyone... it all happens as an operation of holy spirit.