diff --git a/app/server/sonicpi/lib/sonicpi/buffer.rb b/app/server/sonicpi/lib/sonicpi/buffer.rb
index a957b93697..3958c54561 100644
--- a/app/server/sonicpi/lib/sonicpi/buffer.rb
+++ b/app/server/sonicpi/lib/sonicpi/buffer.rb
@@ -14,6 +14,7 @@ module SonicPi
   class Buffer
     attr_reader :id, :num_frames, :num_chans, :sample_rate, :duration
     attr_accessor :path
+
     def initialize(server, id, num_frames, num_chans, sample_rate)
       @server = server
       @id = id
@@ -30,6 +31,10 @@ def to_i
       @id
     end
 
+    def to_f
+      @id.to_f
+    end
+
     def free
       return false if @state == :killed
       @mutex.synchronize do