ExerciseBoredomFilter: Need a no-frills, old, cheap MP3 player that need store no more than one podcast at a time. The boredom during exercise is turning me off from doing it. I also have a lot of podcasts that I'm not making progress on. I figure I should combine the two activities.

I have no interest in MP3 players for general use, but I think I'm willing to bite the bullet if I can have a cheap one to use for just this activity, if it meets the following specifications.

* Detected by Linux, and mounts simply as a drive in /dev/sda or /dev/usb, with no bullshit software necessary for file transfer.
* sub-$40
* No ergomonics/interface stupidity. I want to have one podcast, at most two, and just be able to launch it without navigating into a silly tree or with playlists and such. (e.g., hit play and it will start from the first track - which should not be an issue if there's only one track on there)
* no eBay
* not the size of a brick

The following are not dealbreakers, but might be nice:
* plays ogg files
* FM tuner for NPR
* internally powered/chargeable (like a flash drive)

Most of the podcasts are an hour long anyway, so even two will probably be excessive. The less storage space, the better - if there is some solid, low-capacity device (128mb?) from a reputable maker that has since been obsoleted, and can be had for a song, that would be great. I have no need for new hardware. SD card type is also fine.