I think I've found the source of the problem. In RemoteTrack:fetch(), shown below, a cache lookup occurs, and since the cache size is 100 items, a list over 100 items will produce null results. As a test, I increased the cache size to 500 and the problem went away.

Summary:
Using 7.5 r30391 (and have seen on earlier versions), when playing a playlist that is over 100 tracks from an opml stream, on the NP screen on SqueezePlay and WebUI, all of the items (expect the current playing item) appear as blank items in the np list


Suggested fixes: either a) have fetch() deal with the "cache missing the item" case, and reload the item, and/or b) increase the cache size from it's current 100.

To repro this, go to 7.5->Internet Radio->Staff Picks->Tom's Picks->Planktonic Stream Dreams->User Ratings and select play on "twadzinski", then go to the np list.

sub fetch {
	my ($class, $url, $playlist) = @_;
	
	my $self = $Cache{$url};
	my $id = $idIndex{$self->id} if $self; # refresh ID index cache
	
	if ($self && $playlist && !$self->isa('Slim::Schema::RemotePlaylist')) {
		main::DEBUGLOG && $log->is_debug && $log->debug("$url upcast to RemotePlaylist");
		bless $self, 'Slim::Schema::RemotePlaylist';
	}
	
	return $self;
}


# Keep a cache of up to 100 remote tracks at a time.
tie our %Cache, 'Tie::Cache::LRU', 100;
tie our %idIndex, 'Tie::Cache::LRU', 100;