We have an old Kenwood audio-video stereo receiver (KR-V7040) with 2 wired Bose speakers. I would like to add 2 wireless speakers to get a surround sound feel. A friend told me about Sonos Connect- but it's really expensive. It WILL work with our wired speakers once installed to our receiver but it's only compatible with Sonos wireless speakers...which means even more $$$$. Is there a system out there that is the same idea but more affordable?