as you have a SoundBridge HomeMusic (M400PX) the beta will not resolve any iTunes issues. Pinnacle branded SoundBridges do not support iTunes, you therefore have to use Firefly or a UPnP server like WMP or Twonky.
The second issue the beta resolved was related to BBC streams. This is no longer relevant as the BBC made some changes on their end and all of their stations now work flawlessly with 3.0.44.
SoundBridge M1001 and M1000 • Clint L1 (retired) • DNT IP-dio (retired)
Google Chromecast • Amazon Fire TV • Amazon Echo and Echo Dot