I love Bose sound systems. However, I find out that my old 321 sound system is not compatible or I do not know how to connect it to my brand new Samsung 70In Smart TV. My old 321 has not HDMI connector/plug. I understand that there are some analog converters to connect my cables to an HDMI cable, which goes to my smart TV. Now, what do I need to make these two systems connected to continue an awesome sound experience from Bose? thank you.