these are a range of product, including a tv and stereo, but also "links" that use wifi to connect your existing stereo to the internet/your pc to play or watch your mp3s, video, music etc. on your stereo or tv. I didn't want to replace my stereo, so I linked it with the SL300 and immediately starting streaming shoutcast to my stereo - very cool and painless. Did have some skipping, but it is rare and may be due to my overloading my cable internet access with VOiP and every other device possible!!