public async Task<SongTag> FindFile(string file)
{
int qId = await Send(MPDKeyWords.Client.Database.FIND,
new List<string>() { "file" },
new List<string>() { file });
var reponse = await MPDKeyWords.Response.Encode(await Response(qId));
return (reponse.Count == 1)
? new SongTag(TagType.File, reponse[0])
: SongTag.Empty;
}