Mark, Yeah, after poking around for few minutes, it is mostly working. When clicking on an actual track it downloads the file but dosn't automatically use the full file name, only up until the first space. (Is there a way to define the format for the file name?)

I didn't look at insert or append, but play does work and they're all using the serial commands.

I think the problem I was having a while ago had more to do with the file extention rather than mime-type, and many of those problems went away when hijack mapped vorbis -> .ogg

--Nathan