Index: manual/appendix/file_formats.tex
===================================================================
--- manual/appendix/file_formats.tex	(revision 29895)
+++ manual/appendix/file_formats.tex	(working copy)
@@ -213,18 +213,53 @@
         & \\
     NES Sound Format
         & \fname{.nsf}, \fname{.nsfe} 
-        & Progress bar and seek use tracks instead of seconds.\\
+        & Progress bar and seek use subtracks instead of seconds.\\
     Atari SAP
         & \fname{.sap} 
         & \\
     Sound Interface Device
         & \fname{.sid} 
-        & \\
+        & Progress bar and seek use subtracks instead of seconds.\\
     SPC700
         & \fname{.spc} 
         & \\
   \end{rbtabular}
   
+  \subsection{Codec featureset}
+  \begin{rbtabular}{\textwidth}{lccX}%
+  {\textbf{Format} & \textbf{Seek} & \textbf{Resume} & \textbf{Gapless}}{}{}
+    ATSC A/52 (AC3)                             & x & x & ? \\
+    ADX                                         & x &   & ? \\
+    MPEG audio                                  & x & x & x \\
+    Musepack                                    & x & x & x \\
+    OGG/Vorbis                                  & x & x & x \\
+    Sony Audio                                  & x & x & ? \\
+    RealAudio                                   & x & x & ? \\
+    Dialogic telephony type                     & x & x & ? \\
+    Windows Media Audio Standard                & x & x &   \\
+    Windows Media Audio Professional            & x & x &   \\
+    Audio Interchange File Format               & x & x & x \\
+    Monkey's Audio                              & x & x & x \\
+    Sun Audio                                   & x & x & x \\
+    Free Lossless Audio                         & x & x & x \\
+    Apple Lossless                              & x & x & x \\
+    Shorten                                     &   &   & x \\
+    True Audio                                  & x & x & x \\
+    Wave64                                      & x & x & x \\
+    Waveform audio format                       & x & x & x \\
+    Wavpack                                     & x & x & x \\
+    Atari Sound Format                          & x &   &   \\
+    Synthetic music Mobile Application Format   & x & x &   \\
+    MOD                                         & x &   &   \\
+    NES Sound Format                            & x &   &   \\
+    Atari SAP                                   & x &   &   \\
+    Sound Interface Device                      & x &   &   \\
+    SPC700                                      & x &   &   \\
+  \end{rbtabular}
+  
+  \note{NES Sound Format and Sound Interface Device seek functionality uses 
+  subtracks instead of seconds. Each subtrack equals a second.}
+  
   \section{\label{ref:SupportedMetadata}Supported metadata tags}
     Rockbox supports different metadata formats. In general those tag formats
     are ID3 (v1.0, v1.1, v2.2, v2.3 and v2.4), APE (v1 and v2), Vorbis, MP4 and