Not anyone I know of. The limit on a sound files length is is pretty much the size of the storage capacity built onto the LM-x / AM-1S minus some for mandatory things like the product program, it's picture etc. It escapes me at the moment but it's not a whole lot in the grand scheme of things. I doubt you'd have enough room for something like Jingle Bells, especially if you still had an engine sound on the LM.
- Tim
