I would try following my SoundBlaster guide by blacklisting the HDMI element. Also have you installed all Codecs, such as SOX? Best using Synaptic Package Manager to see/view all codecs. 
Also try this. Elevate yourself to root and in /etc create a folder and name it 'pulse off' - then drag the 'pulse' folder into the newly created 'pulse off' one. Now using Synaptic Package Manager (available from the Software Store/Channel) and search for all ALSA packages - install everything but not JACK or OSS packages. Install all the QAS packages, especially 'mixer' and also the alsa-pulse plug-in needed to hear streaming audio.
{How I miss the old days when getting sound to work was reliant on tweaking OSS (Open Sound Software) and choosing the correct Bitrate for the soundcard to work! 
}