Nefertiti

Hi, I am new to this forum and have had a licensed version of ST for about a year now. I have noticed that the Find and Play menu tab is rather full and wondered what the maximum capacity was here? (I am unsure whether to empty its contents in case I lose the files in the designated folder as well) I am also wondering if the amount of things recorded is only limited by the capacity of the sound card and RAM, or if ST has a maximum capacity per day or whatever? Thanks