diff --git a/install/INSTALL.md b/install/INSTALL.md
index 21bc1a7..f6ef974 100644
--- a/install/INSTALL.md
+++ b/install/INSTALL.md
@@ -92,6 +92,7 @@ apt-get install <deb-package>
     libhtml-parser-perl
     libhtml-template-perl
     libhtml-template-compiled-perl
+    libmime-tools-perl
     libsession-token-perl
     libtext-multimarkdown-perl
     libtext-wikicreole-perl
diff --git a/tools/cleanup-archive.pl b/tools/cleanup-archive.pl
new file mode 100644
index 0000000..5d4f066
--- /dev/null
+++ b/tools/cleanup-archive.pl
@@ -0,0 +1,47 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use Data::Dumper;
+
+my $base_dir=shift;
+-d $base_dir or die "Usage: $0 <path-to-cleanup>\n";
+
+my $now = time;
+my $day = 24 *60 * 60;
+
+sub remove{
+    my ($file) = @_;
+    print "remove $file\n";
+    unlink $file;
+}
+
+sub cleanup_files{
+    my ($dir) = @_;
+    opendir my $dh, $base_dir or die "Could not open '$base_dir' for reading: $!\n";
+    while (my $file = readdir $dh) {
+        next if $file eq '.' or $file eq '..';
+        my $path="$base_dir/$file";
+        if (-l $path){
+            my $age = ($now-(lstat $path)[9])/$day;
+            remove $path if $age > 7;
+        }elsif (-f $path){
+            my $age = ($now-(stat $path)[9])/$day;
+            remove $path if $age > 360;
+        }
+    }
+}
+
+sub cleanup_tmp_files{
+    my ($dir) = @_;
+    opendir my $dh, $dir or die "Could not open '$dir' for reading: $!\n";
+    while (my $file = readdir $dh) {
+        next if $file eq '.' or $file eq '..';
+        my $path="$base_dir/$file";
+        my $age = ($now-(stat $path)[9])/$day;
+        remove $path if $age > 7;
+    }
+}
+
+cleanup_files($base_dir);
+cleanup_tmp_files("$base_dir/tmp");
+
diff --git a/tools/remove-recordings.pl b/tools/remove-recordings.pl
index f6c58eb..b38990c 100644
--- a/tools/remove-recordings.pl
+++ b/tools/remove-recordings.pl
@@ -25,11 +25,12 @@ my $entries = db::get($dbh, $query);
 my %paths   = map {normalize($_->{path}) => $_->{start}} @$entries;
 
 my $dir = $config->{locations}->{local_audio_recordings_dir};
-for my $file (sort glob("$dir/*m4a")) {
+for my $file (sort glob("$dir/*")) {
+    next if $file !~ /\.(mp3|wav|flac|aac|ogg|m4a|aiff|aif|opus|aac)$/i; 
     next if -M $file < 14;
     my $filename = normalize($file);
     unless (exists $paths{$filename}) {
-        print "                    --- $filename\n";
+        print "$filename\n";
         unlink $file or die $! if $delete;
     }
 }
diff --git a/website/agenda/planung/css/default.css b/website/agenda/planung/css/default.css
index bae8f03..4d0ac27 100644
--- a/website/agenda/planung/css/default.css
+++ b/website/agenda/planung/css/default.css
@@ -710,7 +710,7 @@ ul.tabContainer li:last-child{
 }
 
 #content #dialog{
-    position:absolute;
+    position:fixed;
     z-index:1000;
     left: 0;
     right: 0;