Move ffmpeg process cleanup to player thread
Move ffmpeg process cleanup to player thread

Theoretical/UselessBot,rapptz/discord.py,khazhyk/discord.py,imayhaveborkedit/discord.py,mgardne8/discord.py,Rapptz/discord.py,variablehair/Eggplantato,Harmon758/discord.py,jhgg/discord.py,Harmon758/discord.py,lgkern/PriestPy