Fissuras, you suffered the FEARED happy sappy delussion syndrome
@Retroman: Yes you can, but you must find a mega-rare (according to Shatterhand, the MSX meister) FDD interface cartridge. Also your Phillips better have two cartridge slots, otherwise you cant use a game cartridge or a RAM cart.
If you do find one you are in for a treat, since you format the disks on the PC, shove them on thw MSX and play away
Could the tape program you are looking for be called mtap? I think it supports C64 and other formats. HOwever to convert something from disk to tape.. hmm. there should be something.