mp3 input to reciever poor sound quality

[sadams]

Folks,
I have a Sansa Fuze mp3 player hooked into the phono input on my Onkyo TX8555 receiver, and my sound quality is lousy. I dont understand why these newer receivers dont have inputs to accomodate such digital sound sources to give better sound quality. Does anyone out there know how I can improve the sound quality with this set-up? Thanks

[sofaspud]

I have a Sansa Fuze mp3 player hooked into the phono input

That's the reason why it's lousy.
You need to patch into a aux, tuner, tape input on your receiver. Or the VCR audio inputs. Anything but the phono in.
The rest of the why is your homework.

[nigelwright7557]

You need to make sure the mp3 player is turned well up.

I had noise problems with my setup and turned out to be the power supply.
I had to change the earthing arrangement around to get the rid of noise and hum.