Just switch your sentence to "watch" now. As of late, if the GH/GHM has an option to "play," it will. TuneIn has both ESPN radio stations and MSNBC as streaming options, so it's defaulting to that.
There are also other stations on YTTV that can trigger a radio station from Google Play, like the FreeForm channel. I haven't had any issues with saying "watch" before them.