public async Task<bool> PrioRange(int from, int to, int prio)
{
int qId = await Send(MPDKeyWords.Client.Playlist.PRIO,
new List<string>() { prio.ToString(), from.ToString() + ":" + to.ToString() });
return ((await Response(qId)).Equals(MPDKeyWords.Response.OK_LINEBREAK))
? true
: false;
}