Been using the VLC - sounds like a pill but okay, that’s not a new brand of weight loss pills but a media player lol - for quite sometime and I’ve always been satisfied with its performance. Developed by VideoLAN (thanks guys!), this open-source software may also be used as a media converter and as well as player.  It’s amazingly versatile and it is the software I am using to play my .flv audio files which I have downloaded from Imeem (as mentioned in this post).

And not only does it support numerous  video and audio formats - like really, what can it not support? - but most of all, it is a free software. To download it, just visit this link.