Again, it is nothing to do with iHeartRadio. Listen to various stations and music on their site. If you don't like the site/app that's one thing. It doesn't change the fact that it is the station that changed to a crappy low quality stream, not iHeartRadio.
The first two streams you linked are also not using MP3.
I was told that IHEART RADIO wants all stations streaming with them to use MP3 format and be @ 48k,i dont know why....... (I think i was lied to) THIER STATIONS ARENT LIMITED TO THAT! (wzzo,etc) -- And why is the level SO LOW???????? (The music)
Its all very aggravating my friend! (I've calmed down about this)