Here’s a link to an EBay search that comes up with
many players with speakers

http://electronics.search.ebay.com/m...ofocusZunknown

I have a nanoclone with a speaker in the back which
has good sound and volume.

I also have this particular item below from this EBay
seller and find it excellent in terms of picture and
sound quality. Many players look like this due to
common case but this one has an excellent screen and
recent firmware. Vendor reliable in terms of shipping
promptness and packaging care.

http://cgi.ebay.ca/2GB-MP4-OLED-11-i...QQcmdZViewItem

With any player you’ll likely need to boost the sound
volume. First I convert and boost using Super
(freeware video converter) then may additionally boost
slightly when using VirtualDUB to improve picture
quality before converting using AMV converter 4.00 . I
won’t buy a player without it having a built in
speaker as I find I rarely use headphones now.