well, you just need to load the appropriate kernel-module.
the filenames itself dont really matter.
I can just recommend that you use a tool like mp3tag to adjust your filenames. but that probably messes up the iTunes XML / LIB.
I dont use iTunes for that, so *shrug* 🙄
I have no idea about the kernel-module 😳
Is that available via ipkg? I was wondering if this is different among various NSLU2 OS -(Unslug/SlugOS/DebianSlug)