1)About string formats in XSL: I'm happy to use XSL extensions to resolve 
this issue. Using an extension is fairly simple (you can see 
http://www.15seconds.com/issue/031105.htm and 
http://www.csharpfriends.com/Members/Main/Tutorials/get_tutorial.aspx?tutID=64 ) 
.
There is a great job done in EXSLT.org for the MVPXML group there. Using an 
extension you simply wrap the .Net string functions, like ToString(Format).
2)To perform your sum just use the sum function with an appropriate XPATH 
instruction.

"Uncle Ben" <spamfree@n...> wrote in message 
news:%23eA3AWhHFHA.3588@T......
>I would like to produce the following output based on my XML file:
>
> My Album (2005)
> Elapsed Time (hh:mm:ss): 00:07:00
>
> Song 1: title1
> Length (hh:mm:ss): 00:02:30
>
> Song 2: title2
> Length (hh:mm:ss): 00:02:15
>
> Song 3: title3
> Length (hh:mm:ss): 00:02:15
>
>
> =====
>
> <album>
>   <general>
>      <title>My Album</title>
>      <year>2005</year>
>   </general>
>
>   <content>
>      <song>
>         <songTitle>title1</songTitle>
>         <songLengthInSeconds>150</songLengthInSeconds>
>      </song>
>      <song>
>         <songTitle>title2</songTitle>
>         <songLengthInSeconds>135</songLengthInSeconds>
>      </song>
>      <song>
>         <songTitle>title3</songTitle>
>         <songLengthInSeconds>135</songLengthInSeconds>
>      </song>
>   </content>
> </album>
>
> =====
>
> I need some help in designing the XSLT file.  I'd like the
> <songLengthInSeconds> to be formatted in hh:mm:ss format.  Also, I want to
> display the elapsed time (in hh:mm:ss format) based on a total of
> <songLengthInSeconds>.  Could I perform this summation inside the XSLT?
>
> Thank you very much!
>
>
>