As a paying Grooveshark user ($3/month) this app always irks me when it comes up every repost. I say its bad because you bypassing their pay wall but it does get more users using GS soooo........
Also TinyShark is a similar app.
There is a reason that these are not on the play store you know.
Carry on ... Just wanted to drop my $0.02 in.
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Main: Moto X 1058 (Rogers) Unlocked Bootloader
Other Devices: Galaxy Nexus - Dreams 4.4 KitKat, Nokia 620 WP8, Nexus 7(x2), HTC One XL, Nexus S i9020a, Acer A500, Galaxy Tab 7" (Orginal)
R.I.P Devices: HTC Desire (dropped down stairs), HTC 7 Mozart (eaten by aliens), HTC One X+ (sold)