i tunes has free streaming radio stations. i have a sonos connect, it also has a bunch of free streaming radio stations i can listen to.
pandora is great, the free version has a few short commercials here and there or for 30 ish bucks a year you can get better sound quality which is pretty good IMO, no comercials, you can skip as many songs as you want. and stuff like that. i had a paid spottily account for about a month, i like Pandora allot better so i am sticking with pandora,
i am sure there are more places you can get free streaming internet radio but i have not really looked into it much. but those are a few things you might like. the sonos unit is great for streaming my music and its really nice that i can listen to all these free radio stations too.