No, but the retailer where it was purchased might. Tell them it was a gift & you have no receipt. They’ll probably give you a store credit or gift card that you have to spend there, but it’s better than nothing.
But why don’t you keep it? It’s a great little player, and it’s really not that hard to learn. Start with the User’s Guide, and the Sansa website (linked to in the upper left-hand corner of every page here on the forum).
And there’s also a bunch of very nice folks here just itchin’ to help you with whatever you may run into.
Try it . . . I think you’ll like it!