Tauon can reset playing position for files with 0 length and outright stop them a couple seconds later

[C0rn3j]

Seems like if we supply length 0 that neither Tauon nor Phazor can parse the length from, Tauon simply ceases to stop playing the file after 5-6 seconds.

Reproducible by using the .mod file from #1389 that libopenmpt breaks its teeth on.

[Taiko2k]

The alternative is that the file is played blindly until the end is reached. That's not a great situation either but it could be implemented.

[C0rn3j]

I think attempting to play blindly is indeed the better alternative for such files, the current start, wait, stop situation is odd to me.

Perhaps with an added warning that the current file is broken. (it already logs to console in the current state)