Another 2 emulators exist which support the tape recorder for the Famicom:
eFamilyBASIC
http://homepage3.nifty.com/takeda-toshiya/

and

vdmgr
http://www.geocities.jp/g_lsluk/

1.) NNNesteR - save the loaded *.tp/*.tpr tape file to *.vtp
2.) Convert the *.vtp to *.wav
http://rdev.php.xdomain.jp/makimura/archive/tools#
Example:
vtp2wavall.exe SPARKHOUSE.vtp
3.) SPARKHOUSE.wav was created



Different tape formats
https://www.sendspace.com/file/3oicj6