When you are latched onto someone, if there is a track you can't resolve, keep trying to play the next track periodically, so that you'll pick back up with their stream when they next play a track that you can resolve. I can't test this now due to

firewall but I believe the code should be safe.

src/libtomahawk/audio/audioengine.cpp

@@ -73,13 +73,17 @@ AudioEngine::AudioEngine()
     // Since it's indendent, we'll set it to 75% since that's nicer
     setVolume( 75 );
 #endif
+
+    m_retryTimer.setInterval( 10000 );
+    m_retryTimer.setSingleShot( false );
+    connect( &m_retryTimer, SIGNAL( timeout() ), SLOT( loadNextTrack() ) );
 }
 
 
 AudioEngine::~AudioEngine()
 {
     qDebug() << Q_FUNC_INFO;
-
+    m_retryTimer.stop();
     m_mediaObject->stop();
 //    stop();
 
@@ -210,6 +214,9 @@ bool
 AudioEngine::loadTrack( const Tomahawk::result_ptr& result )
 {
     qDebug() << Q_FUNC_INFO << thread() << result;
+
+    m_retryTimer.stop();
+    
     bool err = false;
 
     {
@@ -295,6 +302,8 @@ AudioEngine::loadPreviousTrack()
 {
     qDebug() << Q_FUNC_INFO;
     
+    m_retryTimer.stop();
+    
     if ( !m_playlist )
     {
         stop();
@@ -314,6 +323,8 @@ AudioEngine::loadNextTrack()
 {
     qDebug() << Q_FUNC_INFO;
 
+    m_retryTimer.stop();
+    
     Tomahawk::result_ptr result;
 
     if ( m_queue && m_queue->trackCount() )
@@ -329,7 +340,14 @@ AudioEngine::loadNextTrack()
     if ( !result.isNull() )
         loadTrack( result );
     else
+    {
         stop();
+        if ( m_playlist->retryMode() == Tomahawk::PlaylistInterface::Retry )
+        {
+            m_retryTimer.setInterval( m_playlist->retryInterval() );
+            m_retryTimer.start();
+        }
+    }
 }
 
 
@@ -341,6 +359,12 @@ AudioEngine::playItem( Tomahawk::PlaylistInterface* playlist, const Tomahawk::re
     setPlaylist( playlist );
     m_currentTrackPlaylist = playlist;
 
+    if ( result.isNull() )
+    {
+        m_retryTimer.setInterval( playlist->retryInterval() );
+        m_retryTimer.start();
+    }
+    else
         loadTrack( result );
 }
 

src/libtomahawk/audio/audioengine.h

@@ -20,6 +20,7 @@
 #define AUDIOENGINE_H
 
 #include <QObject>
+#include <QTimer>
 
 #include <phonon/MediaObject>
 #include <phonon/AudioOutput>
@@ -128,6 +129,8 @@ private:
     unsigned int m_timeElapsed;
     bool m_expectStop;
 
+    QTimer m_retryTimer;
+
     static AudioEngine* s_instance;
 };
 

src/libtomahawk/playlistinterface.h

@@ -36,6 +36,7 @@ public:
     enum RepeatMode { NoRepeat, RepeatOne, RepeatAll };
     enum ViewMode { Unknown, Tree, Flat, Album };
     enum SkipSeekRestrictions { NoRestrictions, NoSkip, NoSeek, NoSkipSeek };
+    enum RetryMode { NoRetry, Retry };
 
     PlaylistInterface( QObject* parent = 0 ) : m_object( parent ) {}
     virtual ~PlaylistInterface() {}
@@ -54,6 +55,9 @@ public:
     virtual PlaylistInterface::ViewMode viewMode() const { return Unknown; }
     virtual PlaylistInterface::SkipSeekRestrictions skipSeekRestrictions() const { return NoRestrictions; }
 
+    virtual PlaylistInterface::RetryMode retryMode() const { return NoRetry; }
+    virtual quint32 retryInterval() const { return 30000; }
+    
     virtual QString filter() const { return m_filter; }
     virtual void setFilter( const QString& pattern ) { m_filter = pattern; }
 

src/libtomahawk/sourceplaylistinterface.h

@@ -48,6 +48,8 @@ public:
 
     virtual PlaylistInterface::RepeatMode repeatMode() const { return PlaylistInterface::NoRepeat; }
     virtual PlaylistInterface::SkipSeekRestrictions skipSeekRestrictions() const { return PlaylistInterface::NoSkipSeek; }
+    virtual PlaylistInterface::RetryMode retryMode() const { return Retry; }
+    virtual quint32 retryInterval() const { return 5000; }
 
     virtual bool shuffled() const { return false; }
     virtual void setFilter( const QString& /*pattern*/ ) {}