Folder/file naming

[AndyBobBean]

Hi, I had a search through the forum, but my search terms were a bit general and I couldn't find anything.

Anyway, I've recently installed subsonic for the first time on my raspberry pi and it all seems to be configured ok, the interface loads etc. However, it won't pick up my music unless I rename the files to have no spaces, e.g. I had to rename "01 - Burn Baby Burn.mp3" to "a.mp3" before it would register. Is this normal? I'm hoping not, as I don't want to have to rename ALL my music directory/file structure to have to suit subsonic.

A little info:
Raspbian 'Wheezy', Debian 7.6
Subsonic 4.9 (build 3853)
jetty-6.1.x
java 1.8.0_06
The media folder is on a fat32 pendrive mounted locally with the subsonic user as the owner.

Thanks for you help.