it definitely isnt an option for the 5670... u r better off gettin a separate mp3 player, bc many of ppl dislike the mp3 player that comes with the 8887... for tv tuner i use the ati usb tv wonder but use windvr software bc the one dat...
yea i think when using those kind of programs u only adjust the volume on that program but not from the actual volume control... ie when im watching tv on my 5670 and i try to adjust the volume from the front buttons ill see the volume...