internet music same for any tuner?

A conventional am/fm tuner will not work for internet.

There are devices that provide the equivalent of an am/fm tuner as a high fidelity stereo system component for finding and playing internet radio stations as sources. These also generally allow for additional sources besides internet, an in house computer functioning as a music server, for example.

Roku Soundbridge (<$200, see my system here for an example) is one such device.

If you have a local college or NPR station (non-compressed), then a good tuner sounds as good or better than a Squeezebox/DAC. This is my opinion of course.
I use both a tuner and a squeezebox because I have a great jazz station in my city that I cannot pick up on the Squeezebox. The Squeezebox is well worth it for the vast variety of musical choices.

I grew up on music heard over FM radio.

But there is a much larger assortment of stations with very good sound in most any music genre on internet compared with FM these days, even in larger metro areas.

Plus, you do not have to worry about noise or other distortions due to weak signal, interference etc.

There is no comparison...internet blows away FM in most every regard already and the trend will only increase most likely over time.

I stream digital radio to an airport express which is connected to an aux input on my pre-amp. I love it many stations available especially classical. I use i-tunes or you can use windows media player streaming to the airport via. air foil software.......... No Tuner Needed............GREAT STUFF INDEED.

Two good classical internet classical "stations" are theclassicalstation.org and Bartok radio. Goggle both. They are both MP-3 steams. At work,for casual listening,I use WinAmp,and for what it is;an MP-3 feed,it is OK.

My understanding is that if you load your digital music onto a hard drive,you use a Squeezebox between the hard drive and a DAC,and from the DAC,to your preamp.

A compact disk at 44.1,16 bit is just under a gig(about 800+mg),so a rough rule of thumb is that an auxiliary hard drive that is 500 g would hold a few more that five hundred cd's of music.

I'll let others get into "lossless" formats and all.