Yes. If you install FTP services on it (terribly easy now, with Mark Lord's Hijack kernel), it's like having a portable FTP site. Works fantastic.

If you use USB instead of ethernet, there are other options, such as EmpegTaxi.

I've used several different methods of using my player as a multi-gigabyte file taxi, and they all work with varying degrees of ease-of-use.
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Tony Fabris