Dude, i am listening Radio too and played with this buggy-Driver left 4 Dead, Skype, TS3, Streamings, Downloads over Weeks without Problems, just STO D/C me.
Today i found a Article about the buggy WLAN OPTIONAL UPDATE, looked at my Recend Updates, rollback and now NO D/C. The WLANDRIVER from Windows Update, dated at 02/26/2013 unstable. STO is too sensible for this, other Services aka Netradio, Skype and so on, not.
Give me a try and look at your PC for this Update.