Fix audio distortion

Author: tedwaine

src/audio/src/audio_output.cpp

@@ -359,9 +359,8 @@ media_reader::AudioBufPtr AudioOutputControl::pick_audio_buffer(
     }
 
     if (drop_old_buffers && playing_forward_) {
-        r++;
         sample_data_.erase(sample_data_.begin(), r);
-    } else {
+    } else if (drop_old_buffers) {
         sample_data_.erase(r, sample_data_.end());
     }
     return v;

src/timeline/src/item.cpp

@@ -1726,13 +1726,11 @@ void BuildFrameIDsHelper::add_frame(caf::actor clip_actor, timebase::flicks time
         current_clip_actor_ = clip_actor;
         timeline_timepoints_.clear();
         clip_timepoints_.clear();
-        std::cerr << "@";
 
     }
 
     timeline_timepoints_.emplace_back(timeline_tp);
     clip_timepoints_.emplace_back(clip_tp);
-    std::cerr << ":";
 
 }