Well here's thw drill. As far as I know Tape images for MSX do not exist, no emulator supports them. Then again here might be a program that makes them but I doubt it. for C64/PLus4 etc you have TAPs, but not that I know for MSX.
You better try and give a kidney for an FDD controller and a Memory Mapper
(I didnt give the name because I didnt rememebr the euro version, shatterhand
But tehse are rare carts anyway!)