This is my 1st review on here and hope it is useful. No sooner I had connected everything and put my Bose unit on Aux it was playing music from Spotify.. 10/10. However, I realised it plays ALL sounds from the PC and so it might be worth going into your [Control Panel] - [Sounds] and setting the Sound scheme to 'none'. This will stop all sounds including the clicking when on I.E.
Now, the one problem that seems to be the most common and it DID happen to myself and that is the interference and with me the disconnection of my wireless internet when the USB dongle was inserted. After looking at the frequency the USB stick was transmitting at, I pulled it out, got automatically connected with my wireless router and then changed the wireless channel to 13 which is at the higher scale of 2400 Mhz. This might be a bit confusing to some and others will know it straight away. The interference is just like some of the radio stations clashing on your car stereo where 2 stations are very close together. If you change the frequency channel on your router and save it, you will be disconnected from the router for a very short time whilst it saves it and then you will automatically get connected.
Plug the USB transmitter back into your PC and that should solve your problem. The USB has 8 channels that you can try as well by just pressing the little button on the side. This didn't help me but could help you.
Overall, I can't get over the price and size of the unit. The quality is fantastic for Spotify etc but true music lovers will probably notice a quality issue, but at £17.99 what do you expect people...
Personally I would say GO FOR IT.. I hope this has been of use to you.