File size to large to send by email.

[Bowman]

I have received many powerpoint presentations over the years that had fifteen or more slides, and music that played throughout the entire show. I created a presentation with only eleven slides and one song playing throughout. The file size is roughly thirty megabytes and I can only send files up to sixteen. Sending it to a compressed file, only decreased it's size by two megabytes. What do I need to do to correct this issue?
Thanks for any help you can provide!