PSX on PSP eBoots Download - CDRomance
Pokémon Red & Pokémon Green: Super Music Collection (Japanese: ポケモン 赤・緑 スーパーミュージック・コレクション Pokémon Red · Green Super Music Collection) is a CD soundtrack for Pokémon Red and Green Versions. It replaces the older, out-of-print release Game Boy: Entire Pokémon Sounds Collection CD.
Theme Hospital (1997)(Sold Out)[budget] - Internet Archive
On Theme Hospital the CD required to play message is what appears when it cannot find all the game files. The path it checks is the one stored in HOSPITAL.CFG (note that this is within the dosbox environment.) I haven't tried on Dosbox Turbo for the android, but my guess would be that you were not mounting your drives at the same point in the path.