In a different thread:

"Laurence Payne" wrote in message
...

Try to open it in Windows Media Player. If it will, it's 16-bit. If
it won't, it's 24-bit. Or look at it's Properties in any wave
editor.

I've got some files I recorded that indicate 48khz/24bit both under Windows
file properties as well as Soundforge, some were recorded in SoundForge,
some in Cakewalk Home Studio 2, both set to record 48/24. They play fine in
WMP. Realizing there may be issues I'm not aware of, if the programs were
set to record at 24 bit and all file properties utilities indicate 24 bit,
how is it that they might not be 24 bit?