Tape Stuck

I just purchased a used Olds, it is a model year 2000. It has the combination cassette /CD stereo in it. I tried a tape, it is one of those adapters to let me use an MP3 player. It did not play and now is stuck in the tape deck. Any ideas on how to get it out of there.

Thanks,
Sarud

try pushing it back in with your finger, then moving it around a little while you push the eject button