Hi,
Try checking the format of any sounds which don't play. Some 3rd party sound packs have stereo sounds in them. These don't play since the release of 1.09, you need to convert them to Mono.
(Sound recorder, Open wav file, File/properties). Check "Audio Format" If it's stereo use "convert" to change it to Mono then save the file.
Hope this helps
TTFN
snafu