Hello, Steve -
There is more than one provider of prison commissary MP3 players.
I believe the Federal Bureau of Prisons SanDisk MP3 players (and the music for them) are sold through Advanced Technology Group (ATG). Regarding the ATG Federal prison provided MP3 player, see the information here:
On that page, choose the link for Working MP3 Player Released Inmate. Note: You will need Adobe Acrobat Reader software (free.) The document for that link is a PDF document. Follow the instructions provided in the 2-page PDF document.
In case you need to contact ATG Reset Service (where you will send your MP3 for release of the player and downloaded music), this is the telephone number:
and this is the email address:
Source of phone # and email address:
Better Business Bureau